US2704940A

US2704940A - Gearing and selective coupling means

Info

Publication number: US2704940A
Application number: US362551A
Authority: US
Inventors: Xan B K Green; Jr Harry Preble
Original assignee: GENERAL SLICING MACHINE CO Inc
Current assignee: GENERAL SLICING MACHINE CO Inc
Priority date: 1953-06-18
Filing date: 1953-06-18
Publication date: 1955-03-29
Anticipated expiration: 1972-03-29

Description

March 1955 x. B. K. GREEN ET AL GEARING AND SELECTIVE COUPLING MEANS 2 Sheets-Sheet 1 ,k f m 5 Z M M Filed June 18, 1953 March 29, 1955 x. B. K. GREEN El AL 2,704,940

GEARING AND SELECTIVE'COUPLING MEANS Filed June 18, 1 953 2 Sheets-Sheet 2 United stat P 16 10 2,704,940 I GEARING AND SELECTIVE COUPLlNGiMEANS Xan B. K. Green, New Paltz, and Harry Preble, Jr., Cross River, N. Y., assignors to General Slicing Machine Co., Inc., Walden, N. Y., a corporation of New Yorkv Application June 18, 1953, SerialNo. 362,551

9 Claims. (01. 74- -16) improved construction for slicing machinesjas mentioned,

which is suitable and adaptable in .t'oodslicers having a rotary disc blade; the feature of this invention being the use of shaft-driven attachments as for instance, a. meat chopper, a vegetable grater or the like, to be run; I one at a time by the motive power which drives sald machine, and that said blade shall be automatically arranged to remain at rest while any attachment is associated with themachine. -:In fact, any attachment "as soon as mounted, will have caused the blade of the slicing machine to 13600111631111 remain disengaged". Not until such attachment is removed from the machine, is it possible to make the blade operate again.

Another object hereof is to provide a novel and proved slicing machine of the character described, which is easy to operate and efiicient in carrying out the purposes for which it is designed.

Other objects and advantages will become apparentas this disclosure proceeds.

1n the accompanying drawings forming'part of this specification, similar characters of reference indicate-corresponding parts in all the views. 1

Fig. 1 is a perspective view of a motor-driven slicing machine embodying the teachings ofthis invention. 11

Fig. 2 is a perspective view'of the machine-shown in condition to drive a. meat chopper attachment mounted thereon. L I

Fig. 3 is an enlarged sectional view taken "at-lines 3-3 in Fig. l. slicing operation.

Fig. 4 is similar to Fig.3, showing'jthegmachine'in condition to operate the meat chopper which 'has been' mounted thereon. The cutting blade of the slicing machine is forever at rest in this set up. Upon operation of the motor, the blade will not move, but-the shaft of the attached device will be d'rive'n, I 5

Fig. 5 is a section taken at line 55-in'- Fig.3, through the hub of the blade wheel; parts lying within the bore of said hub, being omittedto attain clarity' 'of illustration.

Fig. 6 is a perspective view of a sleeve member which serves in this machine to selectively drive either the blade or the shaft of an attachment as will be explained:

In the drawings showing a preferred embodiment of this invention, the numeral 15 designates generally a rotary circular cutting blade. The actual cutting member is a flat ring 16 whose outer periphery 16 is sharpened. This ring is secured onto the face of the rim flange 17 of a dished wheel 17 which has a central hub 18 extending into the housing 19. This housing, from which extends outwardly thereof, that part of the ring 16 which does the actual cutting, is secured on the base 29 of the frame of the slicing machine denoted generally by the numeral 20. The reduced free end of hub 18, slides into and is thus set rotatably in a bearing 28 which is mounted on or is fashioned as part of the housing 19. This hub 18 has a central bore 18, which at the free end of said hub within the housing 19, terminates in a counterbore 26 of non-circular perimeter. The same may be hexagonal as shown.

Interior the housing 19, and extending therefrom towards the free end of the hub 18, is a boss 25 of cir- Here the machine is in condition for" 38 on the sleeve 30; such flange 38 affording that the 2,704,940 Patented Mar- 9 ice cular cross section. Its end near the hub 18 is of reduced diameter as shown at 24. its part of larger diameter is shown as 23. The shoulder thus formed between such boss parts is indicated by the numeral 22. This boss 25 is in axial alignment with the hub 18 when the blade is mounted in its bearing 23. Although called a boss, it serves as a stud on which a certain sleeve, now to be described, is mounted, and is also used as the mount for a member for snirtmg said sleeve therealong. I

The numeral '30 designates generally a sleeve member which is a tube of circular cross section havingan external flange 31 intermediate its ends. The perimetral edge of this flange is hexagonal and is adapted to engagingly fit into the counterbore or socket 26, from which it is removable. This sleeve has suitable interior diameters-to removably fit on the boss and to slide longitudinally therealong and is so mounted on 'said,

boss. Said sleeve also extends into the central bore of the hub 18 in which it may rotate as in a bearing even when said sleeve is slid on said boss 25 so that the flange 31 is out of the socket 26 in the hub of the blade 15. On that portion of the sleeve 30 which is on the boss 25, it carries a wide-faced gear 33 which is in constant engagement with gearing 32 driven as for instance by the electric motor 34. Said sleeve 30 is adapted to engage the non-circular end 35 of a shaft 36 in the non-circular opening 37 at the entrance to said sleeve which is within the hub 18. In the embodiment illustrated, the shaft end is square and said sleeve entrance is of the same shape and of engagement-admitting size for said shaft end. It might here be noted that the boss 25 is made stepped to provide a stop means as at 22 to limit the longitudinal movement of the sleeve 30.

when the flange 31 is out of engagement from the hub The entrance opening 37 is in an inward flange sleeve be pushed by manually shifting the member 39, to effect engagement of the cutting blade 15 so that the latter is driven when the operation of slicing there- 1 with is desired.

shank carriesa hand knob 41 on its exterior end-and has. a flange 42- atits other end which is within the"sleevef 30.1. Saidflange 42 is circular and in rotatable fit. with the "sleeves. interior adjacent the inner surface of the flange 38. A bowed blade spring is loosely carried on' the shankpart intermediate theknob 41 and the housing" 19, as shown at 43. Shank is provided at its inner end with a threaded central hole 44 for detachable en.- gagement with the screw 45- which extends centrallyfrom the hub '46 of a disc 47. This hub 46 fits within the central bore 18? of the hub 18 and supportsthe said hub for rotation thereon. As a-composite unitary structure 50,

elements

45, 46, 47 may be deemed a screw of reduced diameter having an enlarged clear shank and a comparatively large disc for a head. The diameter of this disc 47 is slightly less than the inside diameter of .the knife ring 16, and said disc may'be' deemed positioned in the plane of said ring tho the latter is shown slightly frusto-conical in form. This disc carries a series of equi-spaced rollers as 48 which ride on the dished surface of the Wheel 17 when the assembly is as shown in Fig. 1.

In the slicing machine set-up shown in Fig. 3, the sleeve 30 is in engagement with the cutting blade 15, because the hexagonal flange 31 is within the socket 26. Upon operation of the motor 34, gearing 32 will drive the gear 33 and hence the blade 15.

To use the machine for operating another shaftdriven device as for instance a meat chopper 51 whose drive shaft is 36, the motor is stilled. Knob 41 is turned to disengage the disc-including structure 50 so that the latter is removed. The chopper 51 or any other shaftdriven device is in any suitable manner mounted on the frame of the machine 20 or otherwise, so that its shaft 36 enters the hub 18 to position the shaft end 35 within and in engagement with the non-circular opening 37 and to push the sleeve 30 automatically out of engagement from the hub 18 of the cutting blade 15, as shown in Fig. 4. The shaft 36 is of a dimension so that it is spaced from the wheel 15. Said automatic shift of the sleeve 30 upon the mounting of the attachment device 51, has pushed the shank 40, partially out of the housing 19, because of the contact of flange 38 with the flange 42, of the sleeve and

shank members

30 and 40 respectively. Now upon operation of the motor 34, gearing 32 will drive the gear 33 and hence the shaft 36 of the attached device 51. The blade being disengaged, remains at rest; the sleeve being loose in its fit within the bore of the hub 18.

To restore for use as a slicing machine, the attachment 51 is of course removed and the disc-headed screw structure 50 is put back in place as in Fig. 3. Then by turning the knob 41 after sliding it into the housing 19 as far as it will go, the screw 45 is made to engage said shank 40 and the sleeves flange 31 is again set in the socket 26. The presence of the spring means 43 allows the adjustment that the blade 15 run with a certain degree of tightness, a condition commonly called tensioning the blade.

When the attachment device as 51 is mounted, it is in fixed relation to the frame of the machine 20. It is therefore impossible during this condition to shift the sleeve 30, or is accidental movement of said sleeve possible. Hence disengagement of the blade 15 remains positive. The shoulder 36 of the shaft 36, acts as the stop means to keep the sleeve 30 from driving engagement with the blade 15.

The attachment device 51 may be mounted by means of a thumb screw 53 engaging the housing 19 at 55 and passing through a hole 54 in the blade wheel 15 to assure rest position for the blade.

This invention is capable of numerous forms and various applications without departing from the essential features herein disclosed. It is therefore intended and desired that the embodiment shown herein shall be deemed illustrative and not restrictive and that the patent shall cover all patentable novelty herein set forth; reference being had to the following claims rather than to the specific description herein to indicate the scope of this invention.

We claim:

1. In a coupling device for selectively driving a wheel and a shaft, a frame presenting a bearing and a boss coaxial with said bearing and extending part way into said bearing, a first wheel provided with a hub; said hub being positioned within said bearing and rotatable therein; said hub and boss, each having a bore therethrough which bores are in axial alignment, a bushing positioned on said boss and extending within the bore in said hub; said bushing being slidable and rotatable in relation to said boss and hub; said hub and bushing having cooperative means engaging them whereupon upon rotation of the bushing, said first wheel will also rotate and adapted upon movement of said bushing in a direction outwards of the hub, to disengage, a second wheel rotatably mount ed on the frame, a third wheel securely carried on the bushing exterior the bearing, in constant engagement with said second wheel at all positions of said bushing; the end of the bushing within the hub, having means suitable for releasably engaging the end of a shaft, a shank slidably positioned through the bore in the boss and extending from each end of said boss; one end of said shank being within the bushing and its other end being accessible in space, a member carried on the accessible end of said shank to limit the movement of said shank into the bushing, cooperating elements on said shank within the bushing and on said bushing; the element on the shank holding said bushing in the hub where by the said bushing is engaged for rotation with said hub; said element disengaging when the shank is slid in a direction outwardly of said bushing; said shank being provided with an engagement means at its end within the bushing and accessible through the bore in the hub of the first wheel, a disc having a boss on one surface thereof; said last mentioned boss being rotatably positioned within the bore in the hub of the first wheel and presenting engagement means cooperating with the engagement means on the shank to hold the shank and thereby the bushing, against sliding movement, whereupon removal of said disc, the bushing and said shank are free for sliding movement whereby said bushing and hub may be disengaged and the first wheel thereupon remains at rest while the second wheel and bushing are rotating.

2. The apparatus defined in claim 1, wherein the means to hold the disc and shank in assembly are in threaded engagement.

3. The apparatus as defined in claim 1, wherein the first wheel is dished on its face which is opposite the face thereof the hub is on and thereby presenting a rim and wherein the disc substantially covers said dished formation and lies substantially in the plane of said rim and including spacer elements extending to the face of th; filrst wheel from said disc for contact with said first w ee 4. The apparatus as defined in claim 3, wherein said spacer elements include a roller on each of them; said rcillerls being in rolling contact with the face of the first w ee 5. The apparatus as defined in claim 1, wherein the mentioned shaft-engaging means on the bushing comprises an inward flange on said bushing; said inward flange having a non-circular hole accessible through the bore in the hub of the first wheel.

6. The apparatus as defined in claim 1, wherein the means for the bushing and the hub of the first wheel to engage so that they turn together, comprising an outward non-circular flange on said bushing and a socket in said hub into and out of which said flange moves upon sliding movement of said bushing; said flange engaging vsaid hub when in said socket.

7. The apparatus as defined in claim 6, wherein the lililentioned flange and socket are regular polygonal in s ape.

8. The apparatus as defined in claim 1, including compression spring means between the frame and the memher on the shank.

9. The apparatus as defined in claim 1, wherein the frame and first wheel are each provided with a hole therethrough at one position of said wheel on the frame; said holes being in alignment for the reception of a pin element therethrough.

References Cited in the file of this patent UNITED STATES PATENTS