US654147A - Manifolding device. - Google Patents

Description

No. 654,147. Patented `luly 24, |900.

.1. FmEnLANuEn.

MANIFLDING DEVIGE. :(Applcation led Matr. 15, 1900.)

(No Model.)

TH: aims PEYEHS ca. Prwau'rno.. wAsHmnToN, n. c.

UNrrnD MANIFOLDING DEVICE.

SPECIFICATION forming part of Letters Patent No. 654,147, dated July 24, 1900.

Application tiled March l5, 1900. Seria-l No. 8,823. (No model.)

T0 @ZZ whom t may concern:

Beit known that I, JAKE FRIEDLANDER, a citizen of the United States, residing at Fargo, in the county of Oass and State of North Dakota, have invented new and useful Improvements in Manifolding Devices, of which the following is a specification.

My invention relates to manifolding devices and contemplates the provision of means whereby a draftsman is enabled in one operation to produce a multiplicity of copies of a sketch or drawing, one of which is a negative production on transparent material and is adapted for use in the making of blue-prints with no greater effort than is required to make one sketch or drawing.

With the foregoing in mind the invention will be fully understood from the following description and claims when taken in conjunction with the accompanying drawings, in which- Figure l is a perspective View illustrating a drawing-board and myimprovements there- 011, together with the sheets of material on which the drawing proper and the copies thereof are to be placed, some of the sheets being partly broken away. Fig. 2 is a detail enlarged section of the same, and Fig. 3 is a sheet of paper or other material which has carbon on both of its sides and forms part of my improvements.

Referring by letter to the said drawings, A is an ordinary drawing-board; B, a sheet of paper; C, a sheet of paper or other suitable material having carbon on both of its sides; D D, thin metal strips permanently connected by glue or other means to the ends of the sheet of material O and provided at intervals in their length with apertures a.; E, a sheet of tracing material, such as transparent linen or paper; F, a second sheet of paper, and G G ordinary thumb-tacks.

The perforations a in the strips D permit of the carbon-sheet, to which said strips are attached, being conveniently hung upon a hook or other device and also permit of the carbon-sheet being readily Xed on the drawing-board through the medium of ordinary thumb-tacks without being punctured or otherwise injured.

In practicing my invention I first draw a design or other matter on the paper F and then superpose the sheet of paper B, the appliance formed by the carbon-sheet O and strips D, the sheet of tracing material E, and the sheet of paper F'on the board A in the order named and fasten the same through the medium of the thumb-tacks G, the Shanks of which pass through the several sheets of material and the apertures a of strips D and into the board,asillustrated Ithen simplygo over the design on sheet Fwith a pencil, pen, or other pointed instrument. When a design is thus gone over upon the sheet F, the pressure acting on the carbon-sheet O will make a positive copy on the sheet of paper B and a negative copy on the sheet of tracing material E. Thus it will be observed that two copies of the drawing may be made in one operation and that while one of the copies is anegative production, it being on transparent material is susceptible of advantageous employment in the making of blue-prints. It will also be observed that by using additional carbonsheets C and sheets of paper B and tracing material E my improvement may be extended, so as to enable a draftsman to make an indefinite number of positive and negative copies of asketch or drawing in one operation.

I prefer to draw the design or other mattei' on the sheet F precedent to placing said sheet Over the others and to go over the design with a pointed instrument after the sheet F is properly placed. I do not desire, however, to be understood as confining myself to this, as insome cases the design or other matter may be drawn on the sheet F subsequent to placing the same over the others, when, in addition to the drawing on sheet F, the copies on the sheets B and E will he produced in one operation.

It will be appreciated from the foregoing that my improvement while simple, inexpensive, and easily practiced is calculated to save much time and labor of architects, draftsmen, and others who are frequently required to make two or more copies of every design theyproduce, and it will also be observedfthat when desired more than two copies of af design may be made in one operation, thus rendering it unnecessary to make blue-prints,

the production of which entailsjconsiderable labor and expense.

In addition to being used to advantage in ICO the making of blue-prints the negative copy produced on the tracing-sheet can be used as a positive copy by simply reversing the tracing-sheet.

It Will be readily observed that by virtue of their Weight the metallic strips G, perm anently connected to the carbonsheet, are enabled to hold the carbon-sheet and the sheet of paper below the same against casual movement prior to the insertion ofthe th umh-tacks, and it will also be observed that when one of the metallic strips is hung upon a hook or other device the Weight of the other strip will tend to keep the carbon-sheet straight and in good condition for use.

Having thus described my invention, what I claim isl. The combination of a suitable base such as a drawingboard, and a sheet of paper or other suitable material, a sheet of material having carbon on both of its sides and also `having perforated metallic strips at its ends, a sheet of transparent material, and a sheet of `paper or other material superposed in the or der named on said base and fastened thereto by thumb-tacks extending through the apertures in the metallic strips, whereby 'when a pointed instrument is moved under pressure over the outer sheet a positive copy is produced on the inner sheet of material, and a negative copy on the sheet of transparent material, substantially as specified.

2. As an improved article of manufacture, the copy device described comprising a sheet of flexible material having carbon on both of its sides, and thin metallic strips permanently connected to the opposite ends of the said strip of material and each having apertures at intervals in its length, substantially as specified.

In testimony whereof 1 have hereunto set my hand in presence of two subscribing witnesses.

JAKE FRIEDLANDER.

Witnesses:

SMITH STIMMEL, Rom?. M. PoLLocK.

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