US2090773A

US2090773A - Apparatus for multiplying records

Info

Publication number: US2090773A
Application number: US36464A
Authority: US
Inventors: Wolfson David
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-08-16
Filing date: 1935-08-16
Publication date: 1937-08-24
Anticipated expiration: 1954-08-24

Description

D. woLFsoN 2,090,773

APPARATUS FOR MULTIPLYING RECORDS Filed Aug. 16, 1935 3 Sheets-Sheet 1 1N VEN TOR.

ATTORNEY.

mds @Ti w M im Aug. 24, 1937. D. woLFsoN y2,090,773

APPARATUS FOR MULTIPLYING RECORDS Filed Aug. 16, 1935 5 Sheets-Sheet 2 INVENTOR.

BY ATTORNEY.

Aug. 24, 1937. D WOLFSON l APPARATUS FOR MULTIPLYING RECORDS Filed Aug. 16, 1955 5 Shees--Sheerl 3 l IZ INVENTOR.

-,z 0W BY ATTORNEY.

Patented Aug. 24, 1937 UNlTED STATES means PATENT orrice Claims.

The present improvements relate, in general, to duplicating machines and more particularly to novel means and methods for multiplying copies from a single master copy.

A primary object of the improvements, among others, is to provide novel apparatus and methods for insuring a maximum. number of perfect copies from a master record.

Another object is to provide a, novel combination of elements which is economical to manufacture and operate.

A further object is to provide a device Wherein the master copy is maintained in fixed position and the sheets to be imprinted are mel5 chanically applied thereto. Another object is to provide a novel sheet feeding and dampening unit for traversing the fixed master copy, and for impressing a sheet thereon during travel.

Another object of the improvements is: toprovide a platform for holding the master copy flatwise thereon and a reciprocating carriage for supplying and moistening a sheet of paper and thereupon imposing and impressing the sheet on the master copy. Means for accomplishing this concurrently with traverse of the carriage,

constitutes a further object of the invention.

1 The simplification of elements and elimination of parts is a. further desideratum. In this respect it is an object of the improvements to provide a master roller which is moved by traction across the master copy and imparts rotation to feed and moisture rollers, as well as cooperates to propel, dampen, apply and impress a sheet of paper onto the master copy. Another object is to provide a novel carriage unit for accomplishing the foregoing functions manually.

Other objects include the provision of novel details o-f construction and simplied arrangement and combination of parts which contribute to durability, ease of v operation and simplicity.

Further advantages and objects Will be apparent to those skilled in the art upon reference to the accompanying specification and drawings in Which Figure 1 is a plan view of one form of the present improvements.

Figure 2 is a section through line 2 2 of Figure 1 but with the carriage over the master copy.

Figure 3 is a View similarI to Figure 2 with the 50 carriagel shown impressing a sheet of paper onto the master copy.

Figure 4 is an end elevation of the carriage on the platform, With parts removed.

Figure 5 is a modification.

Referring to the drawings, the present embodiment of the improvements include a flat member for supporting the master copy II. Although this flat member may be of metal or other suitable material, it is preferably made of glass mounted on a sturdy backing I2 provided with legs I3 for supporting same. While the glass plate may be mounted in any convenient manner, without departing from the invention, in the illustrated embodiment, it constitutes a hori- Zontal platform III upon which the master copy II is fastened latWise as by studs or other anchoring means I4. As illustrated the master copy II lies atwise over only a portion of the platform, although-it may occupy the entire space. f

Means for superimposing a sheet of paper on said master copy II is provided in a carriage I5 which may be reciprocated across the platform and master copy. The traverse of this carriage is preferably, although not necessarily, facilitated by guideways or tracks IB in the form of rods extending along vopposite sides of the platfonn I0. Four eye-bearings I'I threaded upon said rods operate to suspend the carriage I5 across and above the platform and master copy. A hand grip I8 on said carriage may be grasped for reciprocating said `carriage and bearings along said rods and platform.

As illustrated several cylindrical rollers are journaled on carriage I5 so as to be elevated or depressed at will. In the present embodiment three such rollers 20, 2| and 22 are illustrated although the upper feed roller may be dispensed with in some embodiments. The feed roller 2U, the mioistening roller 2I and the compression and impression traction roller 22 are all maintained in a suspended position above the platform I0. Rotation is imparted to these three rollers by providing means whereby the traction and impression roller 22 may be depressed intoi contact with the surface of the platform, whereupon movement of said carriage across the platform by pushing handle IB will cause roller 22 to rotate by the resulting traction.

Various expedients may be resorted to for suitably mounting the rollers 2E), 2| and 22. In the illustrated embodiment a portion of thei carriage is movable relative to the remainder and the rollers are mounted thereon. The movable carriage portion comprises a frame 24 pivoted at 25 to the carriage portion I5 having the bearings I l. As more clearly seen in Figure 1, this frame 24 is rectangular, having two opposite short sides in which the rollers are journaled and two opposite longer sides, one of which has the in 55 24 extends through a bifurcated member 29, andiv a spring 38 engaging collar 3| and member 29 l5 serves to maintain the frame elevated. However pressure applied to handle I8, will compress spring 38, and permit roller 22 to` contact the platform. Upon release of pressure on` the handle, the

spring returns the frame and roller to elevatedy 2O position.

The feed roller 2U and moisture roller 2 I, both smaller than roller 22, are mounted in engagement with roller 22 and derive their rotary movement therefrom. As more clearly seen in Figure 25 4, the rollers 28 and 2| are journaled in

inclined bearings

33 and 34 and their trunnions are engaged by

spring clips

35 and 36 which resiliently urge them along the inclined bearings for resilie-ntly maintaining them against the roller 22,

The moisture supply means for roller 2| may take various forms. In the embodiment under description, a pan or tank 21 extends across the frame and is inclined slightly toward roller 2|. Felt, waste or other liquid absorbent 38 is dis- 35 posed in the pan, and has an upturned edge engaging roller 2| which preferably has a metal surface. A removable keeper-rod 48 is resiliently maintained against the absorbent edge 39 against roller 2| by spring clips 4I.

A removable: receptacle for a supply of paper 45 is provided with legs 41 which rest in holes in the carriage I5. A removable gravity chute 48 also has legs 49 resting in holes on said carriage. The chute has a bottom slot or opening 50 through 45 which the individual sheet 5| is fed by gravity to the rollers. As illustrated, chute 48 is aligned with the contacting surfaces of rollers 2U and 22 whereby the sheet 5| may be fed by gravity into the trough formed by their curved surfaces.l Upon 50 rotation of the roller 22 in a counterclockwise direction, rollers 28 and 2l rotate in anopposite direction and sheet 5| is gripped between

rollers

22 and 22 and drawn downwardly until it is gripped between moistening roller 2| and ro-ller 22, whereupon the sheet is moistened on its under side by metal rollery 2| and drawn downwardly toward platform I8, whence it is applied thereon by roller 22, with the moistened face down.

An apron or shield extends across the frame and protrudes between rollers 28 and 2|. 'I'his member protects the upper roller 2U from moisture from the absorbent on roller 2 I, prevents the absorbent from being inadvertently dragged between the rollers, and has a down turned'inner lip which serves to direct the down coming edge of paper 5| between rollers 2| and 22, and prevents improper travel of the sheet.

In operating the illustrated mechanism for practicing the improved methods, a master copy 7() is made. This master copy may be produced by means of writing, printing or drawing on suitable paper with copying ink, the material toI be copied. Manifestly, this may be accomplished in an ordinary typewriter by taking a sheet of 75 paper and placing beneath same an inverted sheet of suitable carbon paper, so that the carbon or inked face of the paper is in engagement with the under face of the paper sheet. Upon disposing these sheets in a typewriter, a duplicated copy of the writing is made on the reverse side of the paper sheet in reverse. Therefore, after the desired material is typed, the sheet comes out as a master copy having the proper typing on one face and a duplicate reverse copy on the other face thereof.

This master copy II with the ink characters in reverse is laid flatwise upon the platform I0 'and held in position by studs I4 (see Figure l).

Asheet of paper 5I is placed in chute 48 and descends by gravity to a position between rollers 2U and 22 (see Figure 2). Since yieldable connection 28 keeps roller 22 clear of platform I0, the handle I8 may be grasped and the carriage I5 slidably moved from the position in Figure 1, over and clear of the master copy I I, to the fore portion of the platform, as seen in Figure 2. Obviously the printed material is placed on the master copy in such a position that it will be centered on the sheet 5I when superimposed thereon by the carriage. The absorbent 38 has previously been supplied with a highly volatile liquid which may be evenly distributed in a lm of moisture on the periphery of roller 2|, as is common in the art.

An impression or copy is now ready to be made on sheet 5I. The handle I8 is depressed and roller 22 is held in engagement with platform I0 and master copy (dotted lines position, Figure 4). While thus depressed, the carriage is pushed along the master copy |I and platform I0, and the rotation by traction of roller 22 rotates rollers 20 and 2|.

Rollers

22 and 28 cooperate to grip and advance the sheet 5I toward the moistening roller 2| and the latter cooperates with the roller 22 to grip and advance the sheet toward the master copy II. In doing so, the roller 2| moistens the under face of sheet 5I. As the sheet 5| travels toward the master copy the location of the moisture roller 2| is such that it causes the edge of the sheet to extend towards the trough between roller 22 and copy II with the result that the sheet 5I is directed under the roller with the moistened face superimposed on the master copy. Continued advance of the carriage causes the rotating roller o 22 to impress the entire dampened sheet 5I onto the copy II. After every part of the sheet has been thus impressed on the copy and the carriage is free of the sheet 5 I, handle I8 may be released, whereupon roller 22 is raised. The printed sheet 5| may now be lifted off of copy II and laid aside. Another sheet may now be taken from supply 46, placed in chute 48 and carriage I5 returned to the fore part of platform I0 for making another impression. Accordingly, a copy may be made with each travel of the carriage from right to left in Figure 1, the carriage being idle during return travel from left to right.

The roller 22 is preferably made of resilient material such as rubber, so as to perform more efliciently in its various capacities. This roller serves as a feed roller in cooperation with roller 2|! and helps to' uniformly moisten the paper by cooperating with roller 2|. Furthermore, the roller 22 guides the paper to the platform and impresses it firmly against the master copy. The resilience of the roller 22 facilitates this impression and keeps the sheet steady by taking a purchase on it by friction, so as to prevent slippage. The roller 22 likewise supplies the power for rotating the other rollers and does so by the traction resulting from friction between the roller 22 and the platform and copy. No slipping of the roller or sheet relative to each other or relative to the copy results from this novel arrangement.

By locating the moisture roller 2| below the axis of roller 22, the sheet 5| is directed toward the under side of roller 22, thereby insuring its destination. Since the moisture on roller 2| is so highly volatile, this roller is positioned at the location illustrated, so that the sheet will be freshly moistened immediately before it engages the master copy. The sheet therefore has no opportunity to dry and fail to take the impression.

In Figure 5, a modified form of moisture means is illustrated. An absorbent roller 60 is interposed between the absorbent 38 and moisture roller 2|. This roller 60 obtains moisture from the absorbent 38 and transfers it to the roller 2| whence it is transferred to the sheets 5|. Otherwise the organization remains the same.

I claim:

1. A duplicating machine comprisingl a platform, a carriage adapted to be reciprocated across said platform, a feed roller for advancing a sheet of paper, and a moisture roller and a compression roller for moistening such sheet and pressing it onto said platform and guard means associated with said rollers for shielding one of said rollers from moisture and guiding the paper.

2. A duplicating machine comprising a platform, a carriage adapted to be reciprocated across said platform, a frame member movable relative to said carriage, a compression roller on said frame, a paper feed roller engaging said compression roller, a moisture roller engaging said compression roller, and means for concurrently rotating said rollers as said carriage is reciprocated and guard means associated with said rollers for shielding one of said rollers from moisture and guiding the paper.

3. A traction driven duplicating machine comprising a platform for holding a master copy, gudeways along opposite sides of said platform, a carriage on said guideways and suspended across said platform, a chute on said carriage for feeding a single sheet to be printed, a receptacle on said carriage for supporting one or more sheets in storage, a roller depending from said carriage and yieldably mounted, a tension device for holding said roller above the platform permitting depression of said roller into engagement with said platform whereby rotation by traction is imparted to said roller as said carriage is moved along said platform, a paper feed roller and a moisture roller driven by said rst named roller, said rollers being positioned for directing a moistened sheet beneath said rst named roller onto said platform as said carriage advances thereover.

4. A duplicating machine comprising a platform, a reciprocating carriage suspended over said platform, means on said carriage and movable relative thereto for applying a sheet to said platform and yieldable means connected with said carriage for normally maintaining said movable means above said platform, and means for varying the degree of yieldableness of said yieldable means.

5. A traction driven duplicating machine comprising a platform for holding a master copy, guideways along opposite sides of said platform, a carriage on said guideways and suspended across said platform, a roller depending from said carriage and normally above said platform yieldably mounted, and a tension device permitting depression of said roller into engagement with said platform whereby rotation by traction is imparted to said roller as said carriage is moved along said platform.

DAVID WOLFSON.