US593672A - Fornia - Google Patents

Description

(No Model.) 2 Sheets-Sheet 2.

M. N. LINDLEY 8v L. I. GOGGINSQ MIMEOGRAPH. No. 593.672. Patented Nov. 16,1897.

"I ll-IIYIII' 'IIIII1 B Illllllllllli INVENTOR 6 ATTORNEYS.

WITNESSES:

'lhvi'rnn States PATENT (lemon.

MARK N. LINDLEY AND LESLIE I. OOGGINS, OF SAN FRANCISCO, GALI- FORNIA; SAID LINDLEY ASSIGNOR TO SAID OOGGINS.

MIMEOGRAPH.

SPECIFICATION forming part of Letters Patent No. 593,672, dated November 16, 1897. Application filed January 11, 1896. Renewed April 19, 1897. Serial No. 632,893. (No model.)

.To a whom it may concern:

Be it known that we, MARK N. LINDLEY and LESLIE I. CoGGINs, citizens of the United States,residing at San Francisco,in the county of San Francisco and State of California, have invented certain new and useful Improvements in Mimeographs and we do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in mimeographs, and has for its object to maintain the paper to be printed on against the stencil-sheet.

It consists in providing the well for containing the paper with a movable bottom and a feeding mechanism to raise the said bottom the thickness of a sheet of paper for each operation, said bottom being operated by raising and lowering the stencil-frame.

In the drawings, Figure 1 is a plan view of the invention. Fig. 2 is a side elevation of the same, the stencil-frame being raised. Fig. 3 is a side elevation, the side of the well being removed to show the construction. Fig. 4 is a front elevation, thedoor being lowered. Fig. 5 is a longitudinal section.

For the purposes of description with reference to the drawings we will let the letter A designate the paper-holding Well. This has a permanent and a movable bottom A, on which the paper rests. This latter bottom is provided with the double incline cleats A A The cleats A A rest on the double wedges B, which have the inclined surfaces or edges B 13 These are connected by the crossbrace B on which is mounted the internallythreaded plate E to receive the screw E, by which the wedges B are advanced and re ceded.

The well A is provided with the front partition, as shown in Fig. 4 of the drawings, which is provided with slots or openings through which the forward ends of the wedges extend when drawn forward. The screw E is extended through this front partition and is provided on the end with the ratchet E, upon which operates the pawl F. The pawl is spring-actuated and pivotally connected to the plunger G. This plunger is provided with a spiral spring to maintain it in a raised position. The plunger is mounted in guideslots in the turned ends of the plate G and is provided with the head G, which is raised by the spiral spring to strike under the stencil-frame C to be depressed by it when lowered for printing.

. The stencil-frame C is hinged to the frame 0 which is mounted on the base 0. The base 0 is designed to hold the well A, which it does by means of the lugs A, which are extended from the well over the projections O of the base and to which itis secured by the screws A The ratchet and pawl are concealed by the hinged door D, in the top of which is cut a slot to pass the head G of the plunger.

In its operation the well is loaded by lowering the door D, throwing oif the pawl F from the ratchet E, and reversing it to wind the screw to recede the wedges B to their full extent. This recedes the inclined edges B and B and allows the cleats A to fall with the bottom A. The paper to be printed on is now laid in the well until the top sheet rests under the retaining-lugsv A, which prevents the top sheet rising with the stencil-frame. When the paper is now laid in the well, as described, the stencil-frame C carrying the usual mimeograph stencil-sheet, is lowered until the stencil rests on the sheet. As it is lowered the frame strikes on the head G of the plunger and depresses it. This plunger carries the pawl F down and rotates the ratchet E sufficient to rotate the screw-E to draw the cross-brace B and wedges B forward to raise the bottom A the thickness of the sheet of paper. When the print has been made, the stencil-frame is raised, releasing the plunger and allowing the pawl to run back on the ratchet the required distance to repeat the operation above described, when the printed sheet has been removed and the stencil-frame is again lowered.

Having thus described this invention, what we claim is- 1. In a mimeograph the combination of a well for holding paper in sheets, with a movable bottom for said well, a stencil-frame to fall over said well, and raising and lowering mechanism for said movable bottom adapted to be operated by the said stencil-frame, substantially as described.

2. In a mimeog'raph the combination of a Well for holding paper in sheets, with a movable bottom for said Well, a stencil-frame to fall over said Well, a screw extended into said Well and adapted to be rotated by the said frame, and intermediate connectionsbetween the said bottom and screw to raise the said bottom as the screw is rotated, substantially as described.

8. In a mimcograph the combination of a well for holding paper in sheets, With a movable bottom having inclined surfaces secured to the under side, Wedge-shaped movable frame to receive the said movable bottom, a screw engaging the said Wedge-shaped frame and provided with a ratchet, and a plunger extended into the path of the said stcncilframe and provided with a pawl to engage the said ratchet to operate the said screw, substantially as described.

In testimony whereof We have hereunto set our hands this 22d day of November, 1895. MARK N. LINDLEY. LESLIE I. COGGINH. lVitnesscs:

BALDWIN VALE, E. F. Murtnooii.

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