US1429327A

US1429327A - Turnover mechanism

Info

Publication number: US1429327A
Application number: US463470A
Authority: US
Inventors: George J Daniell
Original assignee: JOSEPH F STEWART
Current assignee: JOSEPH F STEWART
Priority date: 1921-04-22
Filing date: 1921-04-22
Publication date: 1922-09-19
Anticipated expiration: 1939-09-19

Description

G. J. DANIELL.

TURNOVER MECHANISM.

APPLICATION FILED APR-22, x921.

Patented Sept. 19, 1922.

a SHEE.TSSHEET I.

G. J. DANIELL.

TURNOVER MECHANISM.

APPLICATION FILED APR.22,1921.

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Patented Sept. 19, 1922.

G. J. DANIELL.

TURNOVER MECHANISM.

APPLICATION FILED APR. 22, 1921.

1 ,429,327. P e e Sep 19, 1922.

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George JDanieZl Patented Sept. 19, 1922."

UNITED STATES 1,429,327 PATENT OFFICE.

eRoReE' J. DANIELL, or BROOKLYN, NEW YORK, ASSIGNOR on pun-HALF T0 .iosnin F. STEWART, or NEW YORK, N. Y.

TURNOVER MECHANISM.

Application filed April 22, 1921. Serial No. 468,470.

To all whom it may concern:

Be it known that I, GEORGE J. DANIELL, acitizen of the United States, and a resident of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Turnover Mechanisms, of which the following is a specification This invention relates to turn-over mechanisms for stacks of paper or other sheet material and has for its object to provide a device of the class specified simple in construction, efficient in operation and adjustable for a variety of sizes of sheets and for a variety of heights of stacks.

With these ends in view and others which which will appear hereinafter my improved device comprises features illustrated in their preferred embodiment in the drawings ac.- companying this specification, wherein igure 1 is an end elevation, looking in the direction of arrow 1, Figs. 2 and 3, of a mechanism. embodying my improvements. Fig. 2 is a front elevation, looking in the direction of arrow 2 of Figs. 1 and 3, and

corresponding therewith. Fig. 3 is a plan view of what is shown in Figs. 1 and 2. Fig. 4 is an enlarged detail sectional plan view on

line

4, 4 of Fig. 1. Fig. 5 is an enlarged perspective view of a detail of the mechanism. Fig. 6 is a fragmentary elevation similar to Fig. 1 illustrating a stack of sheets ready to be operated upon by my device. Fig. 7 is an elevation, similar to that of Fig. 1, showing a stack of sheets be ing turned over. All the figures, except Figs. 4 and 5, are to one scale, Figures 4 and 5 being each to a larger scale.

My improved device is particularly adapted for use in printing plants where, after .the sheets have been printed on one side,

it is desirable to turn the pile thereof over with the unprinted faces up for printing on the second face. The operative parts of the mechanism may be mounted on some suitable structure, such as

rails

5, 6, 7 8,

arranged in rectangular form and supported at the corners by legs 9. These legs are of sufficient length to support

rails

5, 6, 7, 8 at a height above the floor suflicient to admit a truck load of sheets under worm-shaft 10 without interference. Supported for ro- .tation in bearings 11 and 12 on

opposite rails

7, 8, respectively, is rack elevating shaft 13. Turning loosely on said shaft near one outboard end thereof and directly above shaft 10 is worm-gear 14 in engagement with worm 15 fixed to shaft 10. Fixed to shaft 13 1s pinion for engagement with rack 16, said rack being held in position relatively to ears of which shaft 13 turns freely. Similarly pinion 18, rack 19 and yoke 20 are mounted upon shaft 13 near its other end, and said pinion is constrained to rotate with shaft 13 by key 21 fast in said pinion and slidable in keyseat 22 in said shaft. By this means pinion 18, rack 19 and yoke 20 may be moved endwise said shaft to accommodate various widths of sheets in pile 23. Also the peculiar mounting of

yokes

17 and 20 on shaft 13 permit the swinging thereof with their respective racks about'the axis of said shaft, whereby said racks may be swung as required out of the path of an incoming or outgoing truckload of sheets.

Racks

16 and 19 are provided at their lower pinion 60 by yoke 17 in theends with

hooks

24, 25, respectively, for

purbearings

26 and 27 in overhanging portions of

rails

5 and 6, respectively, and said shaft is squared at 28 on one end thereof for the reception of hand-crank 29. Shaft 13 is similarly squared at 30 for the same or a similar crank. For permitting shaft 13 to be rotated in anti-clockwise dlrection, Fig. 1, by means of crank 29 when applied to squared end 30, independently of wormgear 14 and worm 15, ratchet 31 fixed to said shaft 13 is provided. For causing that ratchet 31 and shaft 13 to be rotated in anticlockwise direction, Fig. 1, by a crank applied to squared end 28 of worm-shaft 10, worm-gear 14 is provided with spring-urged pawl 32 for engagementwith ratchet 31. Shaft 13 may be rotated in clockwise direction to quickly lower

racks

16 and 19 by throwing pawl 32.0ut of engagement with ratchet 31.

For securing the stack of sheets 23 in The usual baseboard 33,

stack and the two

boards

33, 37 are clamped together, with the stack of sheets therebetween, by the following means: A plurality of side-clamps, preferably three, as 38, 39 and 40, on each side of said stack are fixed midway their height to a horizontal carrier, indicated in a general way by 41. As said side-clamps are all of the same general character a description of one will suf-. fice for all. Clamp 40 is provided with opposit-e clamp-dogs 42, 43 slidably mounted thereon, and each dog is provided with means for securely engaging said side-clamp in any desired position lengthwise said sideclamp. One such means, and which may be the preferred one, comprises latch 44 pivotally mounted on dog 42 and adapted to engage one or more teeth 45 cut in sideclamp 40. Latch 44 may be secured in engaging position with side-clamp 40 by some suitable means such as lock-pin 46 thrust through a suitable hole in latch 44 and into hole 47 in dog 42. Said dogs, as 42, have lips 61 for engagement with

boards

33, 37.

For permitting the adjustment of the sidehment of carriers 41, 48 toward and clamps lengthwise carrier 41 to accommodate different sized sheets, said carrier is preferably made up of telescoping sections 41, 41 and 41 the mid-section 41 having its opposite ends slidably mounted in end sections 41 and 41, respectively.

For engagement with the opposite ends of carrier 41, and opposite carrier 48 trunnion-frames 49., 50 are provided. Said trunnion-frames are alike and a description of one will sufl ice for both. Carriers 41, 48 are provided at their opposite ends with sockets, as 51 to carrier 41, through which slide arms, as 49 of trunnion-frame 49. Said socket 551 has latch 52 for engagement with teeth 53 cut in arm 49 of frame 49, all similar to the locking means described in connection with clamp-dog 42 and side-clamp 40. This arrangement permits the ad'ustrom each other so that the side-clamps as 38, 39, 40, may be brought into close contact with stacks of sheets of different sizes, and those carriers clamped securely relatively to trunnion frames 49, 50. Said trunnion-frames are each preferably made with a center disclike portion from which extend short arms as 49 and 49. at right angles to

arms

49 and 49*, respectively, of frame 49, and from the center of said disc-like portion of frame 49 projects outwardly trunnion 54 having squared end 55. Said disc-like center and arms, as 49 and 49, are efficient for resting against the stack of sheets and the edges of boards 33. 37 to assist in holding the stack intact. Trunnion frame 50 is similarly provided with trunnion 56 similar to trunnion of frame 49, except that the squared end may be omitted.

The operation of my improved device is as follows: One of the racks, as 16, is swung from its vertical position to approximately horizontal position, Fig. 6, and a truck load of sheets is backed in, board 33 is lowered to rest on the corner posts, as 34, 35, and the truck withdrawn. The top-board 37 is then placed on top of the pile and rack 16 swung again into vertical position. Then trunnion-

frames

49 and 50 are assembled with their trunnions in

hooks

24, 25 of

racks

16 and 19, respectively. Arms, as 49 and 49, are then arranged approximately horizontally and shaft 10 is turned to raise or lower, through worm 15. Worm-gear 14, pinions 60, 18, and racks 16, 19, said tru'nnions 54, 56, respectively, until those trunnions are about midway vertically of stack 23. If trunnion-frame 50 is remote from the stack. pinion 18, yoke 20 and rack 19 may be moved along shaft 13, to bring said frame 50 into suitable contact with the stack.

Then one of horizontal-carriers 41, 48 is assembled on its corresponding arms of the trunnion-frames, the telescopic portions being adjusted as needed therefor, and midportion, as 41", is set midway its corresponding end portions. Side-clamp dogs, as 42, 43, are then adjusted with their lips, as 61, in engagement with

boards

33, 37, and their respective latches closed to engage the teeth of the side-clamps. The opposite horizontal carrier is then assembled on its corresponding arms of the trunnionframes, already described in connection with 100 the first carrier. Then the latches of the horizontal carriers are locked into engagement with the corresponding teeth of the horizonal arms of the trunnion-frames, as

latch 52 with the teeth of arm 49, whereby 105 the whole device is locked up on the stack of sheets. Then by turning shaft 13 if the load is light, or by turning shaft 28 if the load is heavy, the stack is lifted from the posts, as 34, 35, and the posts removed. applying the crank to the squared end 55 of trunnion 54, the stack may be swung on the trunnions, see Fig. '7, and the load reversed. Posts as 34, 35, are then restored to position and the reversed stack lowered 115 onto them. The clamping devices may then me stripped off, the truck brought into position and the stack removed.

I claim:

1. In turn-over mechanism for a stack of 120 sheets the combination of means for clamping together the stack of sheets, trunnions on said clamping-together means, means for rotatably supporting said trunnions whereby the sta ck may be turned over, and means 125 ing together the stack of sheets, trun- 130 Then by 1 10 said stack clamping means, a supporting frame, means on said supporting frame for engagement with said trunnions, and means for elevating in said supporting frame said trunnion engaging means, whereby said stack of sheets may be turned over on said trunnions. 1

4. I n turn-over mechanism for a stack of sheets, the combination of top and bottom boards for said stack, means for clamping said stack between said boards comprising a plurality of clamps on each of two opposite sides'of said stack, a clamp carrier extending lengthwise each set of plurality of clamps for supporting said clamps, opposite trunnion frames connected with opposite ends respectively of said clamp-carriers, each trunnion frame having a trunnion thereon, a supporting frame, means on said supporting frame for engagement with said trunnions, and means for elevating insaid supporting frame said trunnion engaging means, w ereby said stack of sheets may be turned over on said trunnions.

5. In turn-over mechanism for a stack of sheets the combination of a pair of opposite trunnion frames, a trunnion on each trunnion frame, a pair of opposite clamp carriers supported by said trunnion frames, a plurality of clamps adjustably mounted on each clamp carrier, a pair of opposite clamp dogs adjustably mounted on each clamp, a supporting frame, means on said supporting frame for engagement with said trunnions, and means for elevating in said supporting frame said trunnion engaging means, whereby said stack of sheets may be turned over on said trunnions.

6. In turn-over mechanism for a stack of sheets the combination of a pair of opposite trunnion frames, a trunnion on each trunnion frame, a pair of opposite clamp carriers comprising a plurality of telescopic members supported by said trunnion frames,

a clamp carried by each telescopic member, and a pair of opposite clamp dogs adjustably mountedon each clamp.

7. In turn-over mechanism for a stack of sheets the combination of a pair ofoppo site trunnion frames, a trunnion on each trunnion frame, a pair of opposite clamp carriers comprising a plurality of telescopic members supported by said trunnion frames, a clamp carried by each telescopic member,

a pair of opposite clamp dogs adjustably mounted on each clamp, a supporting frame, means on said supporting frame for enfor elevating in said supporting frame said -trunnion engaging means, whereby said stack of sheets may be turned over on said trunnions.

8. In turn-over mechanism for a stack of sheets the combination of means for clamping together a stack of sheets, trunnions on said clamping-together means, a supporting frame, a worm shaft and a rack-elevating vshaft, a worm fixed to said worm shaft for engagement with a vWorm-gear carried by said rack-elevating shaft, means for rotating said worm gear from said rack-elevating shaft, a pair of racks having trunnionengaging hooks thereon, and means connected with said rack-elevating shaft for elevating said racks.

9. In turn-over mechanism for a stack of sheets the. combination of means for clamping together a stack of sheets, trunnions on' sald clamping-to ether means, a supporting frame, a worm s aft and a rackelevating shaft rotatably mounted on said frame, a worm fixed to said worm shaft for engagement with a worm-gear carried by said rack-elevating shaft, a ratchet fixed to said rack-elevating shaft adjacent said worm-gear, a pawl carried by said wormgear for engaging said ratchet, a pair of racks having trunnion enga ing hooks thereon, and means connected Wlth' said rack-elevating shaft for elevating said racks.

10. In turn-over mechanism for a stack of sheets the combination of a pair of opposite trunnion frames, a trunnion on each trunnion frame, a pair of opposite clamp carriers comprising a plurality of te1escopic members supported by said trunnion frames, a clamp carried by each telescopic member, a pair of opposite clamp dogs adjustably mounted on each clamp,'a worm shaft and a rack-elevating shaft rotatably mounted on said frame, a worm fixed to said worm shaft for engagement with a wormgear carried by said rack-elevating shaft, means for rotating said worm gear from said rack-elevating shaft, a ratchet fixed to .gagement with said trunnions, and means said rack-elevating shaft adjacent said worm-gear, a pawl carried by said wormgear "for engaging said ratchet, a pair of racks having trunnion engaging hooks there-.

on, and means connected with said rackelevating shaft for elevating said racks.

11. In turn-over mechanism for a stack of sheets the combination of a pair of opposite trunnion frames, a trunnionon each trunnion frame, a supporting frame, means carried by said trunnion frames for clamping together a stack of sheets, a worm shaft and a rack-elevating shaft rotatably mounted on said frame, a wormfixed to said Worm shaft for engagement with a worm-gear carried by said raek-elevating shaft, means for rotating said worm gear from said rackelevating shaft, a pair of racks having trunnion engaging hooks thereon, means connected with said rack-elevating shaft for elevating said racks, a pair of rack-elevating pinions carried by said rack-elevating shaft and rotatable therewith, and means for holding said racks in engagement with said pinions while permitting said racks to he swung about the axis of said rack-elevating shaft.

In witness whereof, hereby affix my signature this 21st day of April, 1921.

GE ORGE J. DANIELL.