US1168640A - Duplicating-machine. - Google Patents

Description

n. HYAMS. DUPLICATING MACHINE. APPLICATION FILED MAY 15, 1914- Patented Jan. 18, 1916.

1 OFFICE.

DAVID arms, on NEW YORK, N. Y.

DUPLICATING-MACHINE.

T 0 all whom it may concern:

Be it known that I, DAVID HYApis, a citizen of the United States, and a resident of Xew York city, county and State of Xew York, have invented certain new and useful Improvements in Duplicating-Machines, of which the following is a specification.

This invention relates to a duplicating machine more particularly to a machine for making duplicate copies from a gelatinous material adapted to absorb an original writing in ink.

To the accomplishmentof the above objects and to such others as may hereinafter appear. the invention comprises a rotary drum for holding a sheet of gelatinous material. means for pressing sheets of paper against said gelatinous material and means for stripping the sheets of paper from said gelatinous material.

Referring to the drawings. Figure 1 is a side elevation of a machine embodying my invent-ion. Fig. 2 is a top view of Fig. 1. Fig. 3 is a detail view of the drum. Fig. i is a detail view partly in section on "an enlarged scale of the presser roller and stripping rollers.

In the drawings: A designates the base of the machine. and B the frames or standards which support the drum C. so that it can be rotated by means of a removable crank D.

In the prese'nt instance and according to the present invention the drum C is arranged to detachably hold on its outer surface a sheet- E coated on oneside with a the present instance, preferably made of spring metal and extends acrossvthe face of the drum. The ends of the. clamp G are bent over the sides of the drum and secured in place by means of set screws K which engage the slots L in the plates M situated on opposite sides of the drum. The screws K can be set any place along the slots L to Specification of Letters Patent. t m Ja.n 1 1 Application fileti May 15, 1914. Serial No. 838,628.'

v adaptthe clamp G tovarying lengths of sheets.

The :clamp H which holds theother end of the gelatinous sheet E to the drum C is also preferably made of spring metal and extends across the face of the drum, the ends of the clamp being bent over the sides of the drum and secured in place by means of set screws N.

The clamp H is provided in the present instance with a feeding member 0 the object of which will be described later. In the made integral with one side of the clamp H and when in normal position it assumes the raised position shown in F i'g. 1, and in dotted lines in Fig. 4.

\ The standards B are provided with hearing supports P in which is adjustably mounted the spring pressed roller Q which is adapted to press blank sheets of paper against the surface of the gelatinous sheet E so that the blank sheets will take the ink impression contained on the gelatinous sheet E. j

The standards B are also provided with bracket members R which support a feed ing table S upon which blank sheets are placed to be fed into the machine, the table S being preferably placed adjacent the lower edge of the roller Q as shown in Fig. 1.

a The drum C of the machine is placed in its starting position by turning the crank D until the spring pressed roller Q rests upon the feeding member 0 thereby compressing the same as shown in Fig. 4. In order to hold the drum in its normal starting position the top of the feeding member 0 is provided with a concave projection T as shown in Fig. i. The projection is easily forced past the roller Q when it is desired to start the machine due to the action of the sheet The projection placed some distance away from the edge of the feeding member 0 and also away from the edge of the clamp H so that when the feed-- ing member 0 passes but from. underneath the roller Q the upward morement of the feeding member will raise the edge of the paper W as shown in dotted lines in Fig. 4. On the further rotation of the drum the raised edge of the paper is engaged by two stripping rollers X which strip the paper IV off the gelatinous strip E.

The stripping rollers X are preferably driven by means of suitable gears Y at the same speedas the periphery of the drum so that the paper W will be drawn off ina uniform manner ontothe'table a. In order to insure the edge of the paper W being engaged by the stripping rollers X a suitable adjustable guide 6 is provided as shown in Fig. I for accomplishing this purpose. IVhile the invention has been described with particular reference to the details of construction, the same is not to be considered as limited thereto, as many changes can be made and still ,fall within the scope of the invention set forth in the following claims. I claim 1. A duplicating machine comprising in combination a drum, a sheet of gelatinous material secured to the surface of said drum apresser roller, a feeding member on said drum arranged to be compressed by said -presser' roller, and stripping rollers 'for stripping the paper off said gelatinous materia 2. A duplicating machine comprising in combination a drum, a sheet of gelatinous I material secured to the surface of said drum, a presser roller for pressing the paper in contact with said gelatinous material, stripping rollers for stripping the paper off said gelatinous material, and a feeding member on said drum for feeding said paper into the stripping rolls, said feeding member being arranged to be compressed by said presser roller as it passes under the same.

3. A duplicating machine comprising in combination a drum, 2. sheet of gelatinous material secured to the surface of said drum, a presser roller for pressing the paper in contact with said gelatinous material, stripping rollers for stripping the paper off said gelatinous material, and a feeding member on said drum for feeding said paperinto the stripping rolls, said feeding member being arranged to be compressed by said presser roller as it passes under the same, and means on said feeding member for engaging said roller in starting position.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. DAVID HYAMS.

Witnesses Lno J. Marry, PAUL H. Fmxnr.

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