US225379A - Doefee - Google Patents

Description

J. HOPPMAN Lead'and Grayon'flolder,

' No. 225,379. P at e'nted Ma r. 9, 18 80".

WITNESSES INVENTOR MATTORNEY.

N. PETERS, FHOTO-LITHOGRAPHER. WASHINGTON. D. C.

UNITED STATES PATENT GEFICE.

JOSEPH HOFFMAN, OF NEW YORK, N. Y., ASSIGNOR TO JOSEPH REGKEN- DORFER, OF SAME PLACE.

LEAD AND CRAYON HOLDER.

SPECIFICATION formingpart-of Letters Patent No. 225,379, dated March 9, 1880.

Application filed February 9, 1880.

To all whom it may concern Be it known that I, JOSEPH HOFFMAN, of the city, county, and State of New York, have invented a certain new and useful Improvement in Lead and Crayon Holders, of which the following is a specification.

My present invention relates to a lead and crayon holder of the kind described in my Let ters Patent No. 213,569--that is to say, the holder comprising an inclosing-case or sheath and a lead-containing tube terminating at its front end in clamping-jaws, these two parts being longitudinally movable with respect to one another to cause the jaws to contract upon the lead, or to permit them to expand and release the lead,'according to the direction ofthe movement, a spring being employed, (as provided for in my Letters Patent No. 215,521, re-

. issued November 18, 1879, Nos. 8,967 and 8,968,)

in order to move the parts in a direction opposite to that in which they are moved by hand.

My invention consists in a novel construction and arrangement of parts by which I am enabled to obtain the said longitudinal movement, which I accomplish by making the leadcontaining tube capable of partial rotation on its axis, and providing it with a stud or pin engaging a spiral groove or slot in the case, so that when the tube is turned on its axis it will be caused to advance or recede, according to the direction in which it is revolved.

The nature of my invention and the manner in which the same is or may be carried into effect will be understood by reference to the accompanying drawings, in which-- Figure 1 is a longitudinal central section of a lead or crayon or pencil holder embodying the invention, and Fig. 2 is a view of the same with external loose sleeve partially removed or broken away.

The handle A is of ordinary or suitable form or construction, terminating atthe front in a contracted nozzle or front end, designed to act uponthe clamping-jaws in the usual way. The handle is tubular, and receives the lead containing or supporting tube B, which fit'sloosely within the handle, and is provided at its front with spring-jaws projecting beyond the nozzle or front end of the handle, and provided with reverse inclines a, which, when the jaws are drawn back, meet the nozzle, and thus cause the jaws to close upon the lead.

Projecting from the lead-containing tube is a pin or stud, b, which enters an inclined or spirally-formed slot, 0, in the handle.

Under this arrangement it will be seen that if the lead-receiving tube be rotated the pin will travel in the inclined slot, and in so doing will cause a longitudinal movement of the tube in one direction or' the other, according to the direction in which it is rotated.

The rearward movement of the tube which occasions the closing of the clamping-jaws is effected by a spring, cl, which encircles the tube, and is made fast at one end to the tube and the other end to the handle, asshown. This spring tends to move the tube in the direction requisite for closing thejaws. It may be arranged otherwise than shown, and need not be made fast to either the tube or handle.

The main object of using a sleeve is to concoal the slot in the handle. Any other device, such as a small knob or button, forming a continuation of the stud, could be employed in lieu of the sleeve.

Having described my improvement, what I 8 5 claim, and desire to secure by Letters Patent, is-- 1. In a lead or crayon holder, the combination of the tubular sheath or handle and the lead-containing tube, provided at its front end 0 with clamping-jaws and connected with the sheath by a pin and inclined slot connection, substantially as described, whereby the said tube, when rotated, is caused to move longitudinally with respectto the sheath, as and for 9 5 the purposes hereinbefore setforth.

2. The combination, with the tubular sheath or handle, of the lead-containing tube, provided with clamping-jaws, and with a pin or stud which enters an inclined slot in the sheath, I 00 and a sleeve, or its equivalent, mounted on the the sheath, connected with and adapted to op- 10 exterior of the sheath and attached to said erate the lead-containing tube, substantially stud, substantially as set forth. as set forth.

3. The tubular sheath and the lead-oontain- In testimony whereof I have hereunto set 5 ing tube, provided with clamping-jaws and my hand this 7th day of February, 1880.

connected with the sheath by a pin and in- JOSEPH HOFFMAN. clined slot connection, as described, in ooinbina- Witnesses tion With the retracting-spring and the sleeve, JOE W. SWAINE,

or equivalent device, placed on the exterior of LEOPOLD ANSBAGHER.

Images