US4A - Stock - Google Patents

Description

quicker,

ends to, c steady frame F, F,

- n rr. STATES PATENT Acrie;

THOMAS BLANCHARD, or 'New YORK, N. Y.'

sTocK 'SHAVING on RoUNDNe MAGHi'Nn'FOR Brees, Enns, as., or snirs TACKLE .encens Y To all whom 'it may concern: Y

Be it known that I., THOMAS BLANCHARD, late of Spr-ingfield,in the county of Hampden and State of Massachusetts, but now of the city, county, and State of New York, have invented, made, and applied to use cer'- tain new andV useful Improvements Ma= chinery for Manufacturing Ships Tackle? Blocks, whereby the operation technicallyknown among blockmakers as'the stock shaving or rounding the edges 'or joints and ends of the blockl may be performed better, and cheaper thanby hand labor, and that the said improvements and the methods of constructing and usin the maehinery by which the same are ej ect'edr are set forth and shown inthe .following description and in the drawing 'annexed to andk making a part of this specification,'wheie in- The principal ,Figurel` represents an orthographical projection of the whole machine, and the several detached figures shown separately contain parts of the machinery to make the same, and ,this specification more easily understood, the samefigures and letters of` reference being used to designate the corresponding parts in all the figures.

A, A, are two lowercross bearers. i B, B, is a large swinging frameeentered on pivots which go through one end of each of the bearers A', A, into the lower part of the frame B, B.

CgC, C, C, are D, D, two long, and D, bearers.

F, F, is a steady frame, and armssupported, andcentered on pivots through C, C. Gr, Gr, are two vertical posts, or standards four posts, SuppOrtng D, 51A),7 three short to the right of the center of the machine, all' shown as p fgwogd, butmaygbeniadegof iron. 0n these several posts, and standards the working parts of the machinery are fixed as follows:

a, a, are two iron arms jointed at these and connecting the arms of the with the swing frame B, B. On the side of one of the posts Gr, is the swing frame crank Z), b,'o`n the vertical arm of which is the bar c, connecting' that arm of the crank b, b, to the swing frame B,

d' .on the horizontal arm of the crank Z, is the shiftingV chuckI e',

rod d, connecting that arm to the largelevver H, hung on a center on the same side of the post G, and by these collectively the motion of the swing frame B, isregul'ated. d

e, e, is a metal frame whose cross pieces; are fitted with slots toallow of' the f'rameff being slidden laterally onv the screwr bolts byv which itis secured to the frame D, andk the position vas required of the frame is given by the back screw the head of fitted to receivethe arbor j", and guide, or

form wheel l, is a iixed having bearings g, i the Vjournals 'of the rotary cutter block handV onthis block h are mounted two cuttersfc', '12,@

itted with a cap, ordouble iron preciselyv simila'rrin principle, and operation` to the cutting iron of a carpenters doubleironed smoothing plane. j, y Y j j, iS a drum, or pulley to receive a belt by:

iron frame on theJ Vframe D, g, 'to carry, and retain.v

12 in the framev'D. On this frame e, are two bearings lwhich agrapid rotaryvinotion is to be come' municated from any first mover tothe cut;- g

ters c' on which the pinion p,

I On ,the swing frame B, are two bearings in which are mounted the' arbor `0,1 sliding on a key, andy groove is fitted, and at the other end'of the same arbor the corresponding pinionz g,1s

fixed.` At this end of the arbor the pinion g,

into the wheel e, which wheel is fitted Y gears tightly on the standing form piece mandrel t, mounted in bearings onl the frame B. At

the other end of the mandrel t, is one fixed v a oval formed chuck zu, Ifnade4 to receive-the' form piece Gr, and having a VSocket toreceive the center off' the shift-ingeval formed chuck e. This chuck m is also made to hold-the form piece y,

bolts the shifting spur dogs 1, 1, are mount-r ed, and held to the requiredk distance` apart-.f

The conjugate centers of both these chucks,` f i and of the'form piece'are eccentric "with the center of the mandrel t to allow the centerpin hole of the block intended for rouiidingv to come in .the center ofthe pin 2,sothat helpsl to secure it in place. t

In the drawing whichl'jaeeompanies this specification, they standing) `mandrel tf and firmly by twovv boltS, 'andthe is ,madeY withtwo slots iat; 'n Y the conjugate ends in which by twok screw f I cheeks are shown as all in one piece by which the form piece y cannot be changed without removing the mandrel t out of the bearings 0, o, and making the wheel r, to slide the form piece on the mandrel, and fiX the form piece in the back of the chuck which thereby gives the chucks the appearance of being back to back. By the mode which is specified this delay, and inconvenience is obviated as the form piece y, can be placed on the mandrel t, by merely removing the chuck e, while the form y is fixed on the chuck andthen replacing the chuck z, for work as hereafter described. i5 At the other end of the swing frame B, and corresponding `with the standing Amandrel Y is the sliding mandrel s, which slides on bearers on the frameV B, and carries the wheel 4. This wheel gears into the sliding .pinion 572, already named as being mounted on the long arbor O. By these means the motion ofthe two mandrels is always the same upon being set to work as hereinafter described. 4Upon the inner end of the sliding mandrel s, is the fixed oval formed chuck 5, which is made withv slots Yto hold spur dogs G, and screws to secure them, the set eccentric with the center of the mandrel s and having a pin 7, for the hole in the block, the same asV the before described shifting chuck, both the pins 2, and 7, being made to shift for the convenience of putting f in larger, or smaller pins, as may be needed, Y and when one of the required size-is put in place it is kept there VVbya small set screw through the side of the mandrel. The slidingv mandrel s, is regulated as to position by the long back center screw 8, in the stirrup 9, having the nose turned to button from whichbutton is retained to the end of the mandrel by the valved Hanched cover 10, screwed on so that it incloses the button of the screw nose.

On the screw 8, is the crank handle 11, by

whichthe workmanslhand ives and regu-V g a c lates the Ysliding motion of the mandrel sv and the mode by which this machine is set in operation is as follows: The shifting form piece y being made in the form, and sizeof the block intended for rounding is placed by the workmen so as to screw it on the fixed chuck and the centers of the' form wheel f', and cutter block y', being adjusted accurately coincident, or in the same continuousV line, and the centers of the mandrels t and s, being adjusted accurately parallel to vthis line, the cutter z', i, being also adjusted to describe a circle exactly of the same diameter as the form wheel y', 1. The worknan takes a block Vfor rounding, and placing it so that the lower, or as it is technically termed the arse end of the block -is against that dog spur which is at the least distance from the pins 2, and 7 He now enters those pins in the form piece,

the holes on each side of the block, and seeing that the dog spurs come into the line of the longitudinal center of the block, he now by the crank handle ll, turns the screw 8, so as to bring the chucks w, and e, toward each other, and thereby makes them compress, and hold the block firmly in the position for rounding, and the cutters i, i, on the block 7L, having rapid rotary motion given by a belt on the drum j, the workman allows the swing frame B, to approach them until the form piece 1 and form wheel f, l, are in contact. The cutters will have then begun to operate on the block, and the workman gives the mandrels and chucks a rotary motion in the contrary direction to that of the cutters z', i, by the crank handle m. On the arbor O, and the gear wheels through which this is connected moves the mandrels t, and s, and the contact of the block with the cutters,being regulated by the form piece y, the cutters will operate like a plane to shape the block precisely similar to the form piece y. The workman must bring that part of the block where the cutters act against the grain move slowly around to avoid stripping, or splitting the wood, than is needful -where the cutters act with the grain. When the rotation of the mandrels is completed the block will be Vjfinished, and is to be removed by reversing the previousoperation, to make room for another to be entered, and operated on in precisely the same manner. By these means asetof blocks will be rounded exactly alikeV in size, and appearance. Then it is required to have the block rounded somewhat smaller than the form piece this may be done by setting the form wheel frame so much back from the center line as is required toallow the cutters taking oif more of the material, and if on the contrary it is desired to round the block larger than this may be accomplished by setting the form wheel frame forward of the center so as to make the cutters takeoff less material.`

And, I, the said THOMAS BLANCHARD, do hereby declare that I claim as my invention- Y l. The application of rotary cutters fitted with a double iron, or cap to make them cut more smoothly either with, or against the grain,ofthewood. A

2. I also claim as my invention the form of chucks with the dog spurs, and center pins herein described for holding the block, and carrying the same around by compressing the same on both sides while the same is being operated on the said chucks being fitted eccentrically with the mandrels for the purpose of placing the block in a proper position for the cutters to form the side of the block as'the same is presented to them by the shape of the form board.

3: And I claim as my invention the combinatlon of machinery, as herein before substantially specified, and described by which such cutters, and chucks are brought into 5 operation for the purpose of rounding, 01'

stock sheavng blocks.

In testimony whereof I have hereunto sety my hand August 11, 1835.

THOMAS BLANCHARD.

Witnesses:

JOHN N. TAYLOR, JAS. H. SNFORD.

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