US1174414A - Duplicator and the like. - Google Patents

Description

J. H. HASTINGS.

- DUPLICATOR AND THE LIKE.

APPLICATION FILED FEB. 10. 1913.

1 174 414, Patented Mar. 7, 1916.

4 SHEETS-SHEET I.

(Juana/Fob I M i'h-wm a v l U, I M s" R; lwd

J. H. HASTINGS.

DUPLICATOR AND THE LIKE.

Patented Mar. 7,1916.

APPLICATION FILED FEB. 10. 1913.

4 SHEETSSH'EET 2 "mun? 4 n: P

j A. I

aw y I Why/ 4 f,

J. H. HASTINGS.

DUPLICATOR AND THE LIKE. APPLICATION FILED FEB. 10. l9l3.

LIMAM. a Patented Mar. 7,1916.

4 SHEETSSHEET 3- I. H. HASTINGS.

DUPLICATOR AND TH ELIKE.

APPLICATION FILED FEB. I0. I9I3.

. Patented Mar. 7, 1916. I 4 sp ns-sign 4.

"UNITED STATES JAMES HAROLD HASTINGS, OF GLASGOW, SCOTLAND.

v DUPLICA'I'OR AND THE LIKE.

Application filed February 10, 1913. Serial No. 747,436.

To all whom it may concern Be it known that I, JAMES HAROLD HAS- TINGS, a subject of the King of England, residing in Glasgow, Scotland, have invented certain new and useful Improvements in Duplicators and the like, of which the following is a specification.

This invention relates to duplicators and more particularly to devices for use in connection with the feeding of printable sheets thereto.

The object of the invention is to enable such machines to produce more perfect impressions and to facilitate their use especially in respect of dealing with the sheets immediately before the actual printing operation.

According to this invention therefore a duplicator fitted with my complete mechanism includes the combination of a frame, a support, for a form of characters to be printed from, carried upon the frame, and sheet-feed devices mounted'upon the frame comprising a registering member and clamp for positioning a pile of sheets, a sheet feeding mechanis'm wherein the sheet is buckled against a movable stop which subsequently releases the said sheet into printing position, a devicefor placing the buckling stop in operative position at will independently of the normal automatic stop-operating mechanism of the machine, an impression platen adapted to cooperate with the said form, a throw-oil mechanism for the platen whereby the latter may be placed in inoperative position independently of the normal automatic platen-operating mechanism of the machine, means for adjusting the impression period of the platen, and a justifier for the sheets as fed. It is, however, to be understood that certain of these features may be advantageously applied individually or in other combinations than that above Indicated.

The accompanying drawings illustrate in detail one form of duplicator embodying all the features of this invention.

Figure 1 is afront elevation; Fig. 2 is a side elevation of the machine viewed from Specification of Letters Patent.

PatentedMar. '3, 1916.

the right, parts being shownbroken away; 'Flg. 3 is a side elevationof the machine viewed from the left Figs. 4 and 5 illustrate respectively a registering device for a sheet pile and an adjusting device for part of the mechanism. 1

Like letters refer to like parts throughout these drawings, and the directions of movement of certain elements of the mechanism are indicated by arrows.

The machine comprises a base A, side standards or frames B, B a printing drum C mounted on a shaft C and rotated by a handle 0 through gearing C C The pack of sheets is assembled on a table P, and the same are adaptedto be fed between the stenoil-carrying drum G and the impression roller F by a rubbing block D The rubbing block D is suspended and arranged to be operated in'any suitable or desirable manner from a shaft D journaled in the frame of the machine, and connected by a gear wheel C to be rotated from the gear wheel C on the actuating shaft of the machine. The sheet-buckling mechanism may be thrown out of gear by means of a clutch D slid along the shaftD by a small hand lever D" so that a pin D? engages withthe crankshaft driving gear wheel'C when the lever is moved over. The buckling stop with its pertinent mechanism (both to be hereinafter more fully described) is caused to so operate that the sheets spring between the impression roller F and the drum C which bears a suitable form of characters to be printed from, such as a stencil underneath which an inking pad is provided in'the wellknown manner.. The impression roller is moved to and from the drum by a cam G, G acting upon a depressor rod Gr through a projection G. This rod G is pinned to an' arm F projecting from a shaft F to the other end of which is also secured a'second arm F The arms F F are loosely jourinaled on the shaft F and are provided at their free ends with open slots in which the impression roller rests.v Also secured to the shaft F} are collars F each of which has a spring-checked, adjusting screw} screwed through it to cooperate with lugs 13 which project from the arms F F By adjusting the position of the screws F in or out the impression roller comes earlier or later into operation as the case may be. To other arms F projecting from and rigidly connected to the impression-roller shaft are also attached one end of springs F whose other ends are secured to screw-adjustments F whereby the pressure exerted by the impression roller may be increased or diminished at will. The'period of action and timing of the impression roller can also be altered by an adjustment device applied to the depressing mechanism. This feature of construction is shown particularly in Fig. 3 and comprises a cam formed in two parts G, G one of which is tenoned into, and may be slid over, the other by swinging the arm G The latter is guided in a slot G in one of the spiders of the drum and can be clamped in any position by the screw G The paper passing from the buckling stop between the impression roller and the drum is checked and justified by a justifying stop or register H which comprises a long flat bar mounted on cranks H whose shafts are journaled in the end frames of the machine. The register isreciprocated by a link H eccentrically pivoted at H to the gear C As the individual sheets are fed forward by the buckling device they are squared or justified by contact with the justifying bar,

which is timed to rise into position before the impression roller operates, and to fall clear in synchrony with the operative upward movement of the latter.

Guides K are mounted close to the drum beyond the justifying stop and may be adjusted vertically on the frame in relation to the drum. They assist in removing the printed sheets from the platen by catching under the leading edges of the sheets as they come around, and peeling them ofi' as it were. The linkage which drives the justifyingstop also moves a counter L through suitable linkage D, L for the purpose of indicating the number of sheets printed.

As has been stated an independent throwoif mechanism for the impression roller is included in this invention. Pivoted to the side frame of the machine is a small hand lever M upon one end of which is provided a handle M for raising the lever, and a key M for depressing it. The other end M of the lever M is notched at M so as to'receive a pin M. projecting from a bell crank lever M under pressure from a spring MT. The bell crank lever is slotted at M to receive a guiding screw M Projecting from the lever M is another arm M which is connected by a link M to a second lever M pivoted at M. This lever at one end M takes the form of a box-cam so shaped as.

in one position to act upon a pin G prothe latter and hence the impression roller in a depressed position. When the lever M is down (as in Fig. 3) the depressor rod may reciprocate quite freely in performing its normal functions in regard to the impression roller. The spring which acts to draw up the impression roller also keeps the cam M up to its Work. Such a throw-off mechanism is of use for instance at starting the machine, when, say, a new stencil has been put on the drum. If the impression rolleris not then clear or has had no paper fed between it and the stencil the latter is damaged. The throw-off mechanism is used to prevent such mishaps.

The sheet-buckling stop E is secured upon a spindle E journaleddn the end frames and cranked as at E Mounted upon the crank-shaft D is a cam D which upon rotation acts upon the bowl E and pushes up the rod E against the action of the spring E Cam D is so shaped as to permit the rod E to fall rapidly under tension of the spring E so giving a quick return action to the stop E. The rod E is jointed at E to an oscillatory bar E pivoted to the frame at E and openly slotted at one end to receive thecrankpin of the crank E The rod E is also provided with a slot E to form a guide with the screw E for the movements of the rod. From this mechanism the bar E is oscillated up and down, so causing the crank E and hence the buckling stop to oscillates. One end of the shaft of the sheet buckling stop bears a cam E Adjacent to this cam is a bar E which may be slid forward'by a finger key E and is drawn back to the inoperative position by a spring E. The end of the bar is formed with a nose or cam E which engages the cam E and causes it to turn thus placing the buckling stop E into the operative or sheet buckling position quite independently of the normal working of the machine itself. It should also be noted that the buckling stop is formed in one piece and is substantially concentric with its spindle E. It presents an .abutment as at E against which the sheets are buckled by the forward movement of the rubbing block D while at the same time the back of the stop E subsequently presented to the sheet as the abutment recedes that is to say-is so shaped and disposed that the sheets are smoothly guided in their movement toward the sheet justifier or register H when the stop is turned to release them.

Fig. 5 illustrates in perspective an adjustable sheet-pile register which may be detachable or not from the feed-board P (see Fig. 2) or other part of the machine proper. This register comprises a blade N against the flat face of wh1ch the sheets are abutted to position them, and. a projecting arm ,N provided with a slot N to allow movement over and to receive a holding pile of sheets under pressure of torsion springs N which are not too strong to prevent the sheets being fed. A trigger N conveniently pivoted on the arm N engages the clamp when the latter is inoperative and may release it by simple movement of the hook N when it is desired to hold the sheets, as will be clear from the draw- IVhat I claim as my invention and desire to secure by Letters Patent is 1. In a duplicating machine, the combination of a frame, a stencil-carrying support mounted in said frame, sheet feeding devices mounted upon said frame and including an impression roller adapted to move toward and from said stencil-carrying support, supporting means for said impression roller, a reciprocating rod connected to said supporting means to actuate said impresslon roller,

. a projection on said rod, a cam engaging said projection, a pivoted key mounted on said framework and connected to control said cam, arid a dog associated with said pivoted ,key for temporarily locking the 4 same in raised or depressed position, whereby said cam may be operated and .ma ntained in position to place the impression roller in inoperative position independently of the normal impression roller operating mechanism, substantially as described.

2. In a duplicating machine, the comb1- nation of a frame, a. stencil-carrying member mounted in said frame, means for operating said stencil-carnying member, an

impression roller, means for supporting said impression roller to move into and out of engagement with said stencil-carrying member, a reciprocating rod connected to said supporting means to actuate said impression roller, a projection on said rod, a, cam cooperating with said projection to normally permit free operation of the impression roller and arranged to be moved to confine the impression roller in inoperative position out of engagement with the stencilcarrying member, a pivoted key mounted in said frame, a link connecting said key and cam, and a dog for maintaining said key in elevated or.depressed position, substantially as described. Y

3. In a duplicating machine, the combination of a frame, a stencil-carrying drum journaled in said frame, means for rotating said drum, 3, cross shaft loosely journaled in said frame, a pair of arms looselyimounted on said cross shaft, angularly projecting lugs on said arms, an impression roller mounted on thefree ends of said arms adaway from said secured to said cross shaft, angularly dis posed lugs onsaidcollars cooperating with-i said arm lugs, means for adjustingsaid lugs;

relatively to each other to' regulate the de gree of impression of said impression roller,

a spring interposed between said shaft arms and said frame tending to move said impression roller into engagement with said drum, a reciprocating rod connected to said impression roller arms, means for operatin said rod coincident with the rotation of sai drum, a projection on said rod, a cam for engaging said projection to hold therod in depressed position with the impression roller out of engagement with said drum, a pivoted key provided with notches, a con nection between said key and cam for actuating the latter, and a spring pressed dog engaging with the notches in said key to hold the same in elevated or depressed position, substantially as described.

4. In a duplicating machine, the combination of a frame; a rotatable printing drum supported upon the frame; sheet feeding devices mounted upon said frame and including an impression roller adapted to move toward and from said printing drum; a cam rod and spring for so moving said roller from and toward said printing drum; a pin on the said rod; a pivoted boxcam embracing said pin; a pivoted finger key; an arm projecting from said box-cam operatively connected to said finger key;

notches in a part of said finger key which v are concentric with its pivot; anda springpressed dog adapted to enter the said notches for the purpose of temporarily looking the described mechanism, in place, whereby the impression roller may be placed in inoperative position independently of the normal impression roller operating mechanism of the machine.

5. In a duplicating machine, the combination of a frame; a rotatable printing drum mounted therein; a gear wheel connected.

with said drum; a driving gear wheel mesh ing with said drum gear wheel an impression roller supported to move into andout of cooperative relation with said drum; a

reciprocating rod operatively connected with said roller support; 'a projection on said rod; a cam rotatably mounted relatively to the axis of said drum and rotatable therewith, saidcam being adapted to engage said projection and reciprocate said roller drum; spring connections between said roller support and said frame tending to draw said roller toward said drum; a justifying -member pivotally mounted on one side of said impression roller; and a link connected atone end to.

said justifying member and 'at its other end eccentrically connected to said driving gear Wheel, whereby said justifying member is In testimony whereof I have signed my brought into engagement with an advancing name to this specification in the presence of sheet to be printed on and aline same in two subscribing witnesses.

proper position between said drum and im- JAMES HAROLD HASTINGS 5 pression roller immediately prior to the en- Witnesses:

gagement of said sheet by said impression ROBERT SINGER,

roller. JOSEPH W. Doom

Images