US229785A - J ames a - Google Patents
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- US229785A US229785A US229785DA US229785A US 229785 A US229785 A US 229785A US 229785D A US229785D A US 229785DA US 229785 A US229785 A US 229785A
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- Prior art keywords
- rolls
- pills
- roll
- coating
- feed
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- 239000006187 pill Substances 0.000 description 78
- 239000011248 coating agent Substances 0.000 description 76
- 238000000576 coating method Methods 0.000 description 76
- 239000000463 material Substances 0.000 description 54
- 239000001828 Gelatine Substances 0.000 description 24
- 229920000159 gelatin Polymers 0.000 description 24
- 235000019322 gelatine Nutrition 0.000 description 24
- 239000000203 mixture Substances 0.000 description 24
- 239000012530 fluid Substances 0.000 description 20
- 241000681094 Zingel asper Species 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 239000007779 soft material Substances 0.000 description 6
- 230000001070 adhesive Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 244000215068 Acacia senegal Species 0.000 description 2
- 229920000084 Gum arabic Polymers 0.000 description 2
- 229940023488 Pill Drugs 0.000 description 2
- 101710019471 RARS1 Proteins 0.000 description 2
- 240000000913 Typha elephantina Species 0.000 description 2
- 235000018747 Typha elephantina Nutrition 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 235000010489 acacia gum Nutrition 0.000 description 2
- 239000000205 acacia gum Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective Effects 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
- A61J3/005—Coating of tablets or the like
Definitions
- This invention comprises a novel process or method of coating pills, 850., with gelatine or other suitable coating material by subjecting the pills or like articles to the action of soft and elastic surfaces charged or supplied with gelatine or other coating material in a more or less fluid or semi-fluid condition. Said process is carried into effect by certain novel combinations of parts, hereinafter fully set forth.
- Figure l is a partial side and vertical longitudinal sectional view of an apparatus embraced in my said invention and intended for carrying into eifect the process which forms part of my said invention.
- Fig. 2 is a plan and horizontal sectional view of said apparatus.
- Fig. 3 is a sectional view, illustrating the preferred construction of one part of said apparatus, and Figs. 4 and 5 are detached views, representing an impleinentdesigned to be used in conjunction with the apparatus aforesaid.
- A, B, and O are rolls, placed substantially parallel with each other, in the position represented more fully in Fig. 1.
- These rolls are preferably made of sponge, A, secured upon a suitable shaft, a.
- the roll A moves in such contact with the roll B that where the said rolls touch each other the sponge or soft material A is compressed.
- the roll 0 works in contact with the rollB, asimilar compression of the sponge or soft material occurring at the place of contact between the two said rolls.
- the aforesaid rolls may be made of any material which possesses the properties of softness and elasticity, and, preferably, of porosity also, in the requisite degree.'
- extremely soft and elastic felt might be used in place of the sponge, and it is probable that rolls formed of curled hair, proofed against the action of water and inclosed by a suitable fabric, would serve the same purpose as those formed of sponge, as aforesaid.
- each feed-roller D is a trough, E, in which the fluid or semi-fluid coating material is placed.
- the rolls A B O and the feed-rollers D re ceive a continuous rotary movement in the directions indicated by the arrows in Fig. 1 by means of any suitable gearing, belt-connections, or the like.
- a stationary feed-board, K Extended into the opening F is a stationary feed-board, K, the upper surface of which is formed with longitudinal grooves b, as more fully represented in Fig. 2.
- the said feedboard K is placed in a slightly-inclined position, as represented in Fig. 1, and at the inner and lower end of each groove 1) is provided a slight curved elevation, as shown at a.
- an ice-box, G Extended into the space between the upper and lower parts of the endless apron L is an ice-box, G, the upper part of which may be of sheet metal and flat, so as to support the upper part of the endless apron, and at the same time keep the same in a quite cold condition, for the purpose hereinafter stated.
- This ice-box G when the apparatus is in operation, may be filled with ice or any other refrigerating materiallio maintain the top at a temperature sufficiently low to partially congeal the gelatine or like material to a comparatively non-adhesive condition, in which it adheres with difficulty to other surfaces.
- At one end of the endless apron L is a sta tionary table, M.
- a pulley, c as represented in Fig. 1, from which a belt, 9, is extended upward to another pulley, f, on the shaft b, as also indicated in said Fig. 1.
- a ratchet-wheel, n On the shaft 1) of the last-named pulley f is placed a ratchet-wheel, n, the upper part of which projects upward beyond the upper surface of the feed-board K.
- N is a pushing device, composed of a cross head, n, the outer surface, m, of which is made of such form as to fit transversely into or upon the grooved upper surface of the feed-board K, the said cross-head a being provided with a suitable handle, 1*, by which it can be used, as hereinafter explained, and also having at one end a projecting stud, 1', which serves as a pawl for actuating the ratchet n, as herein presently set forth.
- the operation of the apparatus is as follows
- the pills to be coated are thrown upon the grooved upper surface of the feed-board K and are ranged in the grooves b, as represented in Fig. 2, the rounded elevation to at the inner and lower end of each groove preventing the pills from passing out of the groove until designedly moved, as presently herein set forth.
- the elevations a being on line across the lower or inner end of the feed-board K, it follows that the pills will be ranged in transverse lines or rows across the said feed-board, as shown in Fig.
- the pills then fall upon the roll 0, by which they are carried between the said roll 0 and the roll B, where the operation is repeatrlf in the same manner as previously between the rolls A and B.
- the pills, still adhering to the surface of the roll 0, are then carried around until they are brought to a position underneath the said roll 0, when they either fall therefrom by their own weight or are stripped by coming in contact with the strippingbarf, whereupon they are deposited upon a receiving-plate, R, which is placed upon the endless apron L, the said plate B being kept cold by the proximity of the ice-box G, so that the coating of gelatine or other material upon the pill is chilled or brought into that comparatively non-adhesive condition in which it adheres with difficulty to Father surfaces.
- the pills from the feed-board K in the manner above described, are pushed in successive rows upon the roll A, and, being passed first between the rolls A and B, and then between coating operation it is preferred that the roll 0 should have a somewhat greater speed than the roll B, in order that the pills may be more or less turned over or rotated while passing between the two last-named rolls.
- the roll B may have a more rapid rotation than the roll A, for the same purpose; or all three of the rollers may have a different circumferential speed with reference to each otheras, for example, the roll B may be made to move faster than the roll A, and the roll 0 at the same time move faster than the roll B.
- This relative degree of motion may be secured by suitable gearing upon the shafts of the rollsas, for example, a gearwheel, A, on the end of'the shaft of the roll A gears with another, B, of sufficiently smaller circumference, on the shaft of the roll B, and this second gear-wheel, B, with a third, O, of
- Motion may be given to the rolls by means of a pulley, D, on the shaft of any one of them-as, for instance, of the roll A.
- the belt g, and rollers d partially rotates the endless apron L, so that its upper side carries forward the receiving-plate B a certain space or distance, so that the pills as they are dropped or deposited from the roll 0 do not fall one upon another, but are deposited upon the plate R without being brought in contact with each other.
- the parts are so proportioned that as the plate R is carried forward it is passed from the endless apron to and upon the table M, so that another plate, B, may be placed behind it as occasion requires, and receive another and succeeding quantity of the coated pills, and so on during the time the apparatus is kept in operation.
- the sponge or soft and elastic material may be attached to the shafts a in any suitable manner. It is believed, however, that the rolls may be best constructed by placing upon the shaft a a series of clamping-plates, S, with laterallyprojecting studs, as shown in Fig. 3, the sponge or soft and elastic material being made in circular plates, placed side by side, and clamped between the clamps S, the laterally-proj ecting spurs or teeth of the clamps S holding upon the soft material to more effectually retain it in place. Any suitable construction of the rolls, however, may be adopted, and any material may be used (in place of the sponge) which will alford an extremely soft and at the same time an extremely yielding and elastic surface to the rolls.
- sponge is the best material, not only because of its softness and elasticity, but because of the fact that when compressed at the points of contact of the rolls A B it will give out the fluid or semi-fluid material with. which it is saturated, so as to freely deposit the same upon the pills, but when released from said pressure will more or lessabsorb such portions of said material as has not been deposited upon the pills into its substance, so that the pills are more readily passed from the rolls A B to the roll 0, and also more readily dropped from the roll 0, than would be the case if the rolls did not possess this peculiar absorbent property.
- any of the usual substitutes for gelatine in coating pills such, for example, a's-juljube or compounds more or less resembling gelatine,
- the plate It is preferably made of a sheet of oiled silk, so termed, stretched upon a circumferential wire frame,the surface of the silk affording little opportunity for any adhesion of the gelatine to said surface, and said fabric being, moreover, so thin as to be readily cooled by the action of the ice-box or refrigerated device Gr when placed in relation therewith, as hereinbefore explained.
- the wire frame serves merely to distend and hold in position the sheet of the said fabric for the uses aforesaid.
- the combination of the grooved feed board K, the soft and elastic rollers A 13 O, feed-rolls D, troughs E, and steam-jacket I all substantially as midfor the p'urposezherein set forth.
Description
(No Model.)
J. A. WHITNEY. Process of and Apparatus for Coating Pills. No; 229,785.
Patented July 6,1
-PE'raRs, FHDTO-LITHOGRAPHH, WASHINGTON. D c.
UNITED STATES PATENT OFFICE.
JAMES A. WHITNEY, OF NEW YORK, N. Y.
PROCESS OF AND APPARATUS FOR COATING PILLS.
SPECIFICATION forming part of Letters Patent No. 229,785, dated July 6, 1880.
Application filed April 22, 1880.
To all whom it may concern:
Be it known that I, J AMES A. WHITNEY, of the city, county, and State of New York, have invented certain Improvements in Process of and Apparatus for Coating Pills and Similar Articles with Gelatine or other Suitable Coating Material, of which the following is a specification.
This invention comprises a novel process or method of coating pills, 850., with gelatine or other suitable coating material by subjecting the pills or like articles to the action of soft and elastic surfaces charged or supplied with gelatine or other coating material in a more or less fluid or semi-fluid condition. Said process is carried into effect by certain novel combinations of parts, hereinafter fully set forth.
Figure l is a partial side and vertical longitudinal sectional view of an apparatus embraced in my said invention and intended for carrying into eifect the process which forms part of my said invention. Fig. 2 is a plan and horizontal sectional view of said apparatus. Fig. 3 is a sectional view, illustrating the preferred construction of one part of said apparatus, and Figs. 4 and 5 are detached views, representing an impleinentdesigned to be used in conjunction with the apparatus aforesaid.
A, B, and O are rolls, placed substantially parallel with each other, in the position represented more fully in Fig. 1. These rolls are preferably made of sponge, A, secured upon a suitable shaft, a. The roll A moves in such contact with the roll B that where the said rolls touch each other the sponge or soft material A is compressed. In like manner the roll 0 works in contact with the rollB, asimilar compression of the sponge or soft material occurring at the place of contact between the two said rolls. The aforesaid rolls may be made of any material which possesses the properties of softness and elasticity, and, preferably, of porosity also, in the requisite degree.' Thus, for example, extremely soft and elastic felt might be used in place of the sponge, and it is probable that rolls formed of curled hair, proofed against the action of water and inclosed by a suitable fabric, would serve the same purpose as those formed of sponge, as aforesaid. Placed parallel and in contact with each of the aforesaid rolls A, B,
(No model.)
and (J is a feed-roller, D. Underneath each feed-roller D is a trough, E, in which the fluid or semi-fluid coating material is placed.
The rolls A B O and the feed-rollers D re ceive a continuous rotary movement in the directions indicated by the arrows in Fig. 1 by means of any suitable gearing, belt-connections, or the like.
The rolls A B O, feed-rollers D, and troughs E, except at F and G, are surrounded by a steam-jacket, 1.
Extended into the opening F is a stationary feed-board, K, the upper surface of which is formed with longitudinal grooves b, as more fully represented in Fig. 2. The said feedboard K is placed in a slightly-inclined position, as represented in Fig. 1, and at the inner and lower end of each groove 1) is provided a slight curved elevation, as shown at a.
Attached at one side of the lower opening,
Gr, and extended into close proximity to the under side of the roll (3, and parallel with the latter, is a stripping-bar, f. Underneath the said lower opening, G, at a suitable distance below the same, is an endless apron, L, supported upon the horizontal rollers d.
Extended into the space between the upper and lower parts of the endless apron L is an ice-box, G, the upper part of which may be of sheet metal and flat, so as to support the upper part of the endless apron, and at the same time keep the same in a quite cold condition, for the purpose hereinafter stated. This ice-box G, when the apparatus is in operation, may be filled with ice or any other refrigerating materiallio maintain the top at a temperature sufficiently low to partially congeal the gelatine or like material to a comparatively non-adhesive condition, in which it adheres with difficulty to other surfaces.
At one end of the endless apron L is a sta tionary table, M.
To the shaft a of one of the rollers d is attached a pulley, c, as represented in Fig. 1, from which a belt, 9, is extended upward to another pulley, f, on the shaft b, as also indicated in said Fig. 1. On the shaft 1) of the last-named pulley f is placed a ratchet-wheel, n, the upper part of which projects upward beyond the upper surface of the feed-board K.
N is a pushing device, composed of a cross head, n, the outer surface, m, of which is made of such form as to fit transversely into or upon the grooved upper surface of the feed-board K, the said cross-head a being provided with a suitable handle, 1*, by which it can be used, as hereinafter explained, and also having at one end a projecting stud, 1', which serves as a pawl for actuating the ratchet n, as herein presently set forth.
The operation of the apparatus is as follows The pills to be coated are thrown upon the grooved upper surface of the feed-board K and are ranged in the grooves b, as represented in Fig. 2, the rounded elevation to at the inner and lower end of each groove preventing the pills from passing out of the groove until designedly moved, as presently herein set forth. The elevations a being on line across the lower or inner end of the feed-board K, it follows that the pills will be ranged in transverse lines or rows across the said feed-board, as shown in Fig.
2. The apparatus being put in operation, the
solution gelatine or other suitable coating material (said solution prepared in the usual or any appropriate man u er)-in the trough (l is carried in due quantity by thefeed-rollers to the rolls A B G, which receive upon their circumferential surface a film or layer of the said coating material in its fluid or semi-fluid condition, the said rolls, together with the troughs G and the feed-rollers, being maintained at a suitably high temperature by means of the steam-jacket I. The tool or implement indicated in Figs. 4 and 5 is then taken by its handler, and its crosshead n is then inserted behind the innermost transverse row of pills-in other words, that row of pills which rests immediately behind or against the elevations a-and the whole row is then pushed over the said elevations a to or upon the top of the roll A, the rotation of which carries the pills around between the rolls A and B, the soft elastic surfaces of which, saturated with the fluid or semi-fluid gelatine or coating material, are compressed against each other at their place of contact, and, compressing the pills between them, deposit upon the surfaces of the pills a suitable quantity of the gelatine or other coating material. The pills then fall upon the roll 0, by which they are carried between the said roll 0 and the roll B, where the operation is repeatrlf in the same manner as previously between the rolls A and B. The pills, still adhering to the surface of the roll 0, are then carried around until they are brought to a position underneath the said roll 0, when they either fall therefrom by their own weight or are stripped by coming in contact with the strippingbarf, whereupon they are deposited upon a receiving-plate, R, which is placed upon the endless apron L, the said plate B being kept cold by the proximity of the ice-box G, so that the coating of gelatine or other material upon the pill is chilled or brought into that comparatively non-adhesive condition in which it adheres with difficulty to Father surfaces.
The pills from the feed-board K, in the manner above described, are pushed in successive rows upon the roll A, and, being passed first between the rolls A and B, and then between coating operation it is preferred that the roll 0 should have a somewhat greater speed than the roll B, in order that the pills may be more or less turned over or rotated while passing between the two last-named rolls. In like manner, when preferred, the roll B may have a more rapid rotation than the roll A, for the same purpose; or all three of the rollers may have a different circumferential speed with reference to each otheras, for example, the roll B may be made to move faster than the roll A, and the roll 0 at the same time move faster than the roll B. This relative degree of motion may be secured by suitable gearing upon the shafts of the rollsas, for example, a gearwheel, A, on the end of'the shaft of the roll A gears with another, B, of sufficiently smaller circumference, on the shaft of the roll B, and this second gear-wheel, B, with a third, O, of
still less circumference, on the shaft of the roll" 0. Motion may be given to the rolls by means of a pulley, D, on the shaft of any one of them-as, for instance, of the roll A.
Just before each successive row of pills is pushed from the feed-board K to and upon the roll A a stud, r, of the tool or implement N is caused to catch on or against one of the teeth of the ratchetn, and as the implement is pushed forward to discharge therow of pills upon the roll the action of the stud 1" upon the teeth of the ratchet n partially rotates the latter,
and consequently, acting through the pulleys f 0, the belt g, and rollers d, partially rotates the endless apron L, so that its upper side carries forward the receiving-plate B a certain space or distance, so that the pills as they are dropped or deposited from the roll 0 do not fall one upon another, but are deposited upon the plate R without being brought in contact with each other. The parts are so proportioned that as the plate R is carried forward it is passed from the endless apron to and upon the table M, so that another plate, B, may be placed behind it as occasion requires, and receive another and succeeding quantity of the coated pills, and so on during the time the apparatus is kept in operation.
By the process and apparatus herein described very large quantities of pills may be effectually coated in a very short time and at a very small fraction of the expense hitherto required.
In the construction of the rolls A B O the sponge or soft and elastic material may be attached to the shafts a in any suitable manner. It is believed, however, that the rolls may be best constructed by placing upon the shaft a a series of clamping-plates, S, with laterallyprojecting studs, as shown in Fig. 3, the sponge or soft and elastic material being made in circular plates, placed side by side, and clamped between the clamps S, the laterally-proj ecting spurs or teeth of the clamps S holding upon the soft material to more effectually retain it in place. Any suitable construction of the rolls, however, may be adopted, and any material may be used (in place of the sponge) which will alford an extremely soft and at the same time an extremely yielding and elastic surface to the rolls. I believe, however, that sponge is the best material, not only because of its softness and elasticity, but because of the fact that when compressed at the points of contact of the rolls A B it will give out the fluid or semi-fluid material with. which it is saturated, so as to freely deposit the same upon the pills, but when released from said pressure will more or lessabsorb such portions of said material as has not been deposited upon the pills into its substance, so that the pills are more readily passed from the rolls A B to the roll 0, and also more readily dropped from the roll 0, than would be the case if the rolls did not possess this peculiar absorbent property.
It is also to be understood that instead of three rolls placed in the position represented in the drawings, and which I prefer, four or any greater number of rolls may be used, and the pills, instead of beingpassed from between the rolls A and B to and between the rolls B and C, may be passed in succession between successive pairs of the soft and elastic rolls duly charged with the coating material.
It is also manifest that various methods of supplying the coating material to the rolls may be employed, although the feed-rolls D', in conjunction with suitable troughs,E, as herein described, are to be preferred.
It is also to be observed that, when preferred, any of the usual substitutes for gelatine in coating pillssuch, for example, a's-juljube or compounds more or less resembling gelatine,
such, for instance, as solutions of gum-arabic or similar substancesmay be used instead of gelatine as a coating material.
The plate It is preferably made of a sheet of oiled silk, so termed, stretched upon a circumferential wire frame,the surface of the silk affording little opportunity for any adhesion of the gelatine to said surface, and said fabric being, moreover, so thin as to be readily cooled by the action of the ice-box or refrigerated device Gr when placed in relation therewith, as hereinbefore explained. The wire frame, of course, serves merely to distend and hold in position the sheet of the said fabric for the uses aforesaid.
What I claim as my invention is-- 1. The process of coating pills and similar articles with a protective adhesivesubstance which consists in passing them between and in contact 1 the surfaces of soft elastic material charged or supplied with the coating substance, substantially as herein set forth.
2. In an apparatus for coating pills. or like articles, two soft and elastic rolls, in combination with suitable means of supplying the coating material to the said rolls, substantially as and for the purpose herein set forth.
3. In an apparatus for coating pills. or like articles, the combination of a feed-board with two or more soft and elastic rolls and suitable means for supplying the coating material to the said rolls, substantially as and for the purpose herein set forth.
et. In an apparatus for coating pills or like articles, the combination of the soft and elastic rolls A and B with feed-rolls D and troughs E, substantially as and for the purpose herein set forth.
5. In an apparatus for coating pills or like articles,.the combination of the soft and elastic rolls A, B, and G, placed in relation with each other substantially as and for the pun pose herein set forth.
6. In an apparatus for coating pills or like articles, the soft and elastic rolls A, B, and (l, placed in the described relation with each other, in combination with feed-rolls D and troughs E, all substantially as and for the purpose herein set forth 7. In an apparatus for coating pills orlike articles, the combination oftwo or more soft and elastic rolls, means for supplying the said rolls with the coating material, and" an endless apron, L, substantially as and for the purpose herein set forth.
8. In an apparatus for coating pills or like articles, two or more soft and elastic rolls, in combination with means for supplying the coating material to the said rolls and mech anism, substantially as herein described, for imparting a differential velocity to said rolls, substantially as and for the purpose herein set forth.
9. In an apparatus for coating pills or like articles, the combination, with the coating mechanism, of arefrigerated receiving device, whereby the pills are chilled (and rendered incapable of adhering to other surfaces) immediately upon their release from the coating devices, substantially as and for the purpose herein set forth.
10. In an apparatus for coating pills or like articles, the combination of a steam-jacket, I, with two or more soft and elastic rolls and means for supplying the said rolls with the coating material, substantially as and for the purpose herein set forth.
11. In an apparatus for coating pills or like articles, the combination ofthe rolls A, B, and O, feed-rolls D, troughs E, and steam-jacket I, all substantially as and for the purpose herein set forth.
12. In an apparatus for coating pills ordike articles, the combination of the grooved feed board K, the soft and elastic rollers A 13 O, feed-rolls D, troughs E, and steam-jacket I all substantially as midfor the p'urposezherein set forth.
i 13. In an apparatus for coating pills or like articles, the combinationfof the endless belt L, 5 the feed-board K, two 0.1 more .soft and elastic rolls means for supplying the said rolls with the coating material, and mechanism, substaib,
tiztlly as described, for actuating the endless ap'r'on :in iunison. with the feedinglof the pills from the said 'fee'deboanl K tetheseid rolls, :0 all substantially as mldforthepurpose herein iliAMES WHITNEY:-
Witnes'ses: 1".
CHAS. HJDOXAT,
, F...PARKER.-
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US229785A true US229785A (en) | 1880-07-06 |
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US229785D Expired - Lifetime US229785A (en) | J ames a |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2645201A (en) * | 1951-04-12 | 1953-07-14 | Combined Locks Paper Co | Apparatus for coating paper |
US2677922A (en) * | 1950-08-10 | 1954-05-11 | J M Nash Company | Finishing and polishing equipment |
US3045641A (en) * | 1959-04-13 | 1962-07-24 | Pfizer & Co C | Apparatus for color-coding tablets |
US3155541A (en) * | 1961-05-29 | 1964-11-03 | John K Jackson | Coating machine for applying a fluid composition to a workpiece |
US4287849A (en) * | 1978-03-24 | 1981-09-08 | Ulrico Walchhuetter | Apparatus for coating ceramic tiles or the like to be advanced to roller tunnel kilns |
-
0
- US US229785D patent/US229785A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677922A (en) * | 1950-08-10 | 1954-05-11 | J M Nash Company | Finishing and polishing equipment |
US2645201A (en) * | 1951-04-12 | 1953-07-14 | Combined Locks Paper Co | Apparatus for coating paper |
US3045641A (en) * | 1959-04-13 | 1962-07-24 | Pfizer & Co C | Apparatus for color-coding tablets |
US3155541A (en) * | 1961-05-29 | 1964-11-03 | John K Jackson | Coating machine for applying a fluid composition to a workpiece |
US4287849A (en) * | 1978-03-24 | 1981-09-08 | Ulrico Walchhuetter | Apparatus for coating ceramic tiles or the like to be advanced to roller tunnel kilns |
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