US2454548A - Lifting device - Google Patents

Description

Nov. 23, 1948.- 4 E. J. BRINKERT LIFTING DEVICE '2 Sheets-Shetl Filed July 5, 1947 mmvrox. [mm/d {iii/1K0?! BY a ' JY'TOENH Nov. 23, 1948. E. J.-BR1 2,454,548

LIFTING' DEVICE Filed July 5, 1947 v 2 Sheets-Sheet 2 Ir. v

ia'wizrd 24 B9 a ATTORNEY un u I Patented Nov. 23, 1948 UNITED STATES PATENT OFF-ICE LIFTING DEVICE Edward Brinkert, Hartley, Iowa Application .I'uly 5, 1947, Serial. No. 759,136

'4 Claims. 1

This invention relates to lifts for machines such as, for example, shellers, grinders, combines, etc., and aims to provide a novel, useful andpractical lift for tilting the chute" from such a machine or mill to the desired angle for the purpose at hand.

Another object of the invention is the provision of electrically operated lift so constructed that it may be controlled to readily raise-or lower the chute at will, in a simple manner and with the expenditure of a minimum of labor.

The above as well as additional obiectswill-be set forth in the following description, wherein characters of reference refer tolihe numbered parts in the accompanying drawings; It is to be noted thatthe drawings are intended forthe purposeofillustration only; and that it is neither desired nor intended to limit the invention necessarily to any-or all of the exact details of constru-ction shown, excepting insofar as theymay be deemed essential to the invention. 7

Referring briefly to the drawings: Fig. -1 is a fragmentary side elevational view of a machine such as, for instance, a grinding mill of the portable type, having the device of this invention applied. thereto;

Fig. 2 is a fragmentary side elevational View of the same, enlarged to illustrate the invention more clearly.

Fig.v 3 is a fragmentary plan" view of the same, with the chuteomitted.

F g. 4 is a sectional view taken on the line 6-4 of Fig. 3.

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 3.

Fig. 6 is a sectional view taken on the line 66 of Fig. 3.

spaced forked brackets l4. Sleeves or pipes l5 are provided with tongues 18 having holes I! therethrough, each tongue l6 being pivotally mounted in one bracket I4 by passing a bolt l8 through the bracket and the hole H. The sleeves or housings I5 have, as shown, their rear ends sealed, and the sealing of these ends of the sleeves may be accomplished in any other manner than that 2 Y shown; the seals f9 shown comprise plugs or discs which maybe-Welded in the pipe ends.

;Mounted on the forward end of each "pipe i5 is ahub 2B, internally threaded and screwed over the threaded pipe end, and further locked by "a: set screw 2|. 0f" course any other means may be provided for the purpose of rotatably mounting the sprocket pinion '22 on the pipe I 5. The sprocket pinion or gear 22 has a collar '23 extendingover the free end of the pipe, this collar bein intern-ally threaded and having a worm'Z-d in mesh therewith and extending at one end into the pipe l5'gan'd at the other end beyond the free extremity-of-the pipe. At its other extremity 2-5 the worm 24 is forked, and the forked endsofthe worms are pivoted at 26' to brackets" 2"! on the chute ll. Electric motors 2'8 and 29, which are identical excepting that they are selected to normally rotate in opposite directions, are hung rigidly on hangers 30 from their respective pipes l5. Each motor has its shaft 31 provided with apulley 32.

Telescopical-ly adjustable spacer or crossmemhers 33 are provided between the pipes l5 near both ends thereof. Thesecomprise sleeves 34secured at one end to" their respective pipes in ant desired mannerywithpipe sections 35 having their ends sl i'dably mounted in the mutually adjacent endsof the sleeves 34 The pipe sections 35- are provided a plurality of longitudinally spaced holes 36 therethrough, receptive of bolts 31' upon v alignment of one hole in each sleeve 34 with one of the two holes 38 through the free ends of the sleeves 34. Thus, by lifting out the bolts 31, pulling the sleeves 34 apart or pushing them together until a new pair of holes 36 is in alignment with the holes 38, the spread or distance between the pipes I5 may be increased or decreased. This adjustability is for the purpose of making the device applicable to machines of different widths, for in some cases the front wall l3, for instance, is not wide enough to spread the brackets M as far apart as illustrated.

Intermediate their lengths, the pipe sections 35 are provided with aligned openings therethrough and at right angles thereto, and. a tube or pipe 39 joins the sections 35 between these openings. A shaft 40 extends through the tube 39 and its ends project from the ends of the sections 35. One end of the shaft 40 has a pulley 4| thereon, lying in the same vertical plane as the pulleys 42. A V-belt 42 is trained about the three pulleys whereby rotation of one of the pulleys 32 will cause rotation of the other pulleys and hence of the shafts 3| and 40. On the other end of the shaft 40 a sprocket pinion 43 is provided; a sprocket chain 44 is trained about the gears 22 and 43, whereby rotation of the shaft 40 will rotate the gears 22.

When the motor 28 is energized by any suitable means, not shown, so that it rotates, the shaft 40 will rotate as aforementioned, and hence the pinion 43 will cause rotation of both gears 22 in the same direction. Thus the collars 23 will cause the worms 24 to rotate in the same direction and, say, to be moved outward from the pipes I5, thereby swinging the chute ll upward. When the motor 29 is energized so that it rotates, as stated above, in a direction opposite to that of motor 28, the worms 24 will be drawn into the pipes 15, thereby swinging the chute l-l downward.

Oil openings 45 are provided through the pipes l to keep the worms 24 thoroughly oiled, and for this purpose the pipes l5 may be about one-half filled with oil. To prevent the oil from leaking out and being wasted, an accordion-like boot 46 is provided around that portion of each worm 24 which extends outward from the collar 23. This boot may be made of any desired suitable material, and it is provided at one end with a Washer 41 anchored in any desired manner to the worm, and at the other end with a Washer which may be rotatably mounted behind a flange 49 on the collar 23 so that it may be free to rotate. Thus, as the worms are drawn into the pipes 15, the boots 45 will partly collapse, but at all times they will prevent the oil carried out of the pipes l5 by the Worms 24 from dripping off on to the ground.

Obviously, modifications in form and structure may be made without departing from the spirit and scope of the invention.

I claim:

1. In combination with a device having a front wall and having a member pivoted to said front Wall and extending outward therefrom, a pair of spaced parallel tubular housings, cross-members mounted between said housings, pivotal means securing one end of each of said housings to said front Wall below the pivotal mounting of said member, the other ends of said housings having sprockets rotatably mounted thereon, a third shaft rotatably mounted in said cross-members parallel with said housings and having a sprocket on one end in the same plane as said first-named sprockets, an electric motor secured to each of said housings, said motor on one of said housings being adapted to be energized to rotate in one direction and said motor on the other of said housings being adapted to be energized to rotate in the opposite direction, said motors having shafts extending parallel with said housings, said motor shafts having pulleys thereon, said third shaft having a pulley thereon lying in the same plane as said motor shaft pulleys, a belt trained about said three pulleys, a sprocket chain trained about said three sprockets, collars on said sprockets extending beyond the free ends of said housings, said collars being internally threaded and having worms extending threadably therethrough into said housings, the free ends of said worms which extend out of said housings being pivotally mounted on said pivoted member.

2. The combination set forth in claim 1, said housings having oil ports, a collapsible boot surrounding said Worm between said collars and said free ends thereof, means anchoring one end of said boot on said Worm and means rotatably mounting the other end of the boot on said collar.

' 3. The combination set forth in claim 1, said cross-members having means for adjustably varying the length thereof 4. The combination set forth in claim 1, each of said cross-members comprising an end sleeve section secured to one of said housings and a central sleeve section havingits ends slidably mounted in said end sleeve sections, each of said end sleeve sections having an opening therethrough at right angles to the axis thereof, said central section having a plurality of longitudinally spaced openings therethrough at right angles thereto, said sections being adapted to be positioned with said end section openings in alignment with two of said central section openings, and bolts passing through each of said aligned pairs of openings.

EDWARD J. BRINKERT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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