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Publication numberUS791793 A
Publication typeGrant
Publication dateJun 6, 1905
Filing dateOct 9, 1903
Priority dateOct 9, 1903
Publication numberUS 791793 A, US 791793A, US-A-791793, US791793 A, US791793A
InventorsAlbert Johnson
Original AssigneeAlbert Johnson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Wall-paper cutter.
US 791793 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




\\\ \\x TIN@ rPatented. June 6', 1905.




SPECIFICATION forming part of Letters Patent No. 791,793, dated J une 6, 1905.

Application filed October 9,- 1903. Serial No. 176,392.

To all whom it may concern:

ments in Wall-Paper Cutters, of which the following is a clear, full, and eXact descrip-V tion, reference being had to the accompanying drawings, forming part of this specication.

My invention consists of a certain novel construction and arrangement of parts to be hereinafter particularly pointed out and claimed, whereby a revolving circular knife lmay be used as the cutter in connection with a straightedge or rulerfor indicating and fixing the proper line on the paper to be cut.

In the drawings, Figure l is a side elevation of my' improved cutter ready for use, showing a portion only of the ruler. Fig. 2 is a similar side elevation, showing the position of the wheel in use. Fig. 3 is a central cross-section on the lines 3 3 of Fig. 2.

A is a ruler or straight-edge of any desired length and thickness for ruling the necessary lines on the paper to be cut. This ruler carries a tongue B,- running parallel to anda short distance from the cutting edge of the ruler.

O is a carriage provided with flanges am to embrace the sides of the tongue B on the` ruler.

D is a casing within which is mounted on the spindle'E acircular cutting-knife F. This cutting-knife is provided with ball-bearing boxes within which are mounted the balls c c to form a ball-bearing journal for the knife.

d is a Washer to keep the cutting-knife at proper distance from the side of the casing, and e is a nut for holding the spindle and the cutting-knife in the casing. By removing the nut and spindle or bolt the cutting-knife can be easily removed for sharpening. This casing D is mounted on the carriage O by the pins ff at the four corners of the carriage, which pins pass through openings loosely in ears on the casing.

g g are spiral springs surrounding the pins ff and bearing between the carriage and the ears on the casing, so as normally to maintain the casing with the cutting-knife a short distance above the surface of the cutting-table H. u When the straight-edge has been placed in the proper position on the paper to be out, the operator bears down on the casing, at the same time pushing the cutter forward, which rotates the knife and brings its cutting edge on the paper to sever same on the desired line. The flanges a; a and the cutting-knifeFare constructed 'such a distance apart that when the flanges embrace the tongue B on the ruler the cutting edge of the knife will closely hug the edge of the ruler.

The cutting-knife when not in use is normally held above the surface of the table in order that the ruler may be'readily moved into any desired position without removing the cutter 'from its place on the ruler.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is- In a Wall-paper cutter, the combination, With a ruler having a guiding-flange, of a carriage riding on said flange, a revolving circular cutting-blade, a casing in which saidknife is journaled, pins on the corners of said carriage, with perforations on the casing through which the pins loosely pass, and coiled springs on the pins bearing between the casing and the carriage, Wherebyythe cutting-knife is raised from the paper to be cut until depressed bythe operator, substantially as described.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5069097 *Feb 9, 1989Dec 3, 1991Carl Manufacturing Co., Ltd.Paper-cutting machine and method of cutting paper
US5819618 *Jun 14, 1996Oct 13, 1998Martin Yale Industries, Inc.Rotary paper trimmer
US8132490Jun 26, 2008Mar 13, 2012Acme United CorporationRotary trimmer
Cooperative ClassificationB26B25/00