US1636862A - Propelling pencil - Google Patents

Description

July 26,1927.'

E. HASSINGR PROPELLI'NG PENCIL 1923 2 Sheets-Shea! 1 Filed March 12 /llIll/llllll Patented July 26, 1927.

UNITED STATES EGON HASSINGER, OF BARCELONA, SPAIN.

PROPELLING PENCIL.

Application filed March 12, 1923, Serial No. 624,626. and in Spain December 29, 1922.

This invent-ion relates to a pencil holder with magazine for spare leads and it has for its object to construct the pencil in such a manner that the different pieces can be put together exclusively by tclescoping and screwing the one into the other without any soldering. The advantage is thus obtained that each part can be easily exchanged when it should get damaged without special work or auxiliary means. Y

An embodiment of the invention is shown by way of example on the accompanying` drawings, in which:

Fig. 1 is a longitudinal sectional view of a part of the outer casing. y

Fig. 2 is a longitudinal section of the pencil point and Fig. 3 a similar section of a sleeve adapted for locking the point.

Fig. 4 shows a longitudinal section of the inner rotatable sleeve. l

Fig. 5 is a similar section of a coupling sleeve and Fig. 6 is a similar section of the actuating cap screwed on the coupling sleeve.

7 illustrates in a longitudinal section the intermediate bush.

Fig. 8 is a plan view of the slotted cylindrical piece and washer.

Fig. 9 is a section of Fig. 8.

Fig. 10 is a longitudinal section of the connecting sleeve.

Fig. 11 is a sectional view of the pushing pin and its head.

Fig. 12 shows a sectional side view of a threaded plate.

Fig. 13 shows in plan view the threaded plate inserted into'the head.

Fig. 14 is a longitudinal section of an 40 inner threaded sleeve.

Fig. 15 is a longitudinal section of `the magazine and cap. i

16 is a plan view of the magazine. Fig. 17 is a section of the upper part of the magazine.

Fig'. 1S is a section of another form of construction of the cap and Fig. 19 a plan view of Figj18.

Fig. 20 shows the pencil ready for use in longitudinal section.

The improved pencil consists of a casing 1 (Fig. 1) which in the well known manner has a conical forward end 2 and a cylindrical insertion 3 at the point. Into this cylindrical insertion 3 a point 4 is to be inserted which is made from hardened steel and. illustrated in 2. The rear end of this point 4 is externally threaded and designed to be screwed into the internally threaded front end of a sleeve 5 (Fig. 3) the rear end 6 of which is conically enlarged. The outer diameter of the enlarged end 6 of sleeve 5 corresponds with the inner diameter of the casing 1. The rear edge ofthe conically enlarged part 6 of sleeve 5 has incisions 7 for the insertion of a screw driver by means of which the sleeve 5 can be screwed' into the rear end of point 47 these two parts being thus securely fXed in the casing 1. The coni-v cal enlargement 6 of sleeve 5 serves for guiding the spare leads from the magazine into the position ofV use. The spare leads vare stored in a magazine 7 which is a cylinder made from sheet iron, the outer diameter of the said cylinderl corresponding with the inner diameter of the casing 1 so that the 'magazine having been inserted into the casing 1 from the rear end with slight pressure, it is secured against rotation by t-he frictional contact with said casing. The pushing pin 8 (Fig. 11) has at its rear end a cylindrical head 9 with transverse slot 10 (Fig. 13). In this transverse. slot 10 a cross head 11 is located which is threaded at its outer edges. These outer edges engage with the longitudinal slots 13 of a sleeve 12 (Fig. 4).

The threaded cross head 11 is shown in Fig.

12 and its threaded edges engage with the internal threads yof a sleeve 14 14). This sleeve has at'its rear end a conical collar 15 'designed to bear against the upper conical shoulder 16 in a connecting sleeve 17 (Fig. 10). The collar 15 is securely held in its position in the connecting sleeve 17 as shown in Fig. 20 by the forward flange 24 of a. centrally bored cylindrical piece 22 (Fig. 9) which is inserted into the annular groove 18 of the rotatable sleeve 12. Against the rear surface of this piece 22 bears the forward edge of an intermediate bush 20 screwed into the internal thread 21 of the connecting sleeve 17. The threaded sleeve 14 is therefore clamped through its collar 15 and the piece 22 between the two sleeves 17 and 20, the collar 19 of the rotatable'sleeve 12 engaging loosely in the annular groove 23 of piece 22 so that this rotatable sleeve can freely rotate and consequently feed the threaded cross-head 11 and the pushing pin 18 in the fixed internally threaded sleeve 14.

The rotatable sleeve 12 is operated-from the outside by means of the cap 25 (Fig. 6)

he internal thread in the neck end ot the saine being sere-Wed onto a coupling sleeve 27 (Fig. This coupling sleeve 27 has straight inner shoulders 28 designed to come in contact with the straight-lined faces 29 ot the rotatable sleeve l2 (Fig. ll). The arrangement ot lthe contact laces 28 and 29 is shown in Figs. 4l and 5 in dash lines.

The several elements o'l the pencil holder are put together in the following manner:

The steel point 4 is inserted into the outer sleeve l in the manner above described and the guide sleeve 5 is screwed on the rear end ot said point. Tie coupling sleeve 27 is placed on the rotatable sleeve 12 so that its contact faces 28 engage with the contact tacos 29 ot said rotatable sleeve, whereupon the intermediate bush is pushed on so that its `torard end bears on the collar 30 ot the coupling sleeve 2T. In this position. the different elements are secured bv the insertion of the cylindrical piece 22 into the annular groove 18 ot the rotatable sleeve l2. The threaded sleeve la is then pushed over the rotatable sleeve Yi2 and rotated until the threaded cross head ll o'tI the pushing pin has beenl screwed into the internal thread ot the threaded sleeve. The collar of the threaded sleeve lll l'iears on the edge ot the cylindrical piece 22 in this position the threaded sleeve is secured b v nieans et the conneeting` sleeve l? pushed ou and screwed with its internal thread 2l onto the externallyT threaded torivard end ot intermediate bushing 20. The cap is then screwed uponI the rear end ot the coupling sleeve 2T and the elenients which are thus securely connected with one another are pushed ironi the rear into the casing l wliereupon the pencil holder is ready "tor use.

Certain constructional details are given by wav ot example only and niaji7 be inodiiied within the limits ot the invention. rlhe loiver endpl of the rotatable sleeve l2 is iter instance enlarged to receive an eraser.

llhc space betiveen the threaded sleeve ltt and the magasine 7 serves for storing the reserve leads.

'lhe magazine 7 is closed at the ifornfard end b v a rotatableliead with an aperture 3st cin-responding ivith'an aperture 35 at the torward end ot sleeve 7; By the rotation oli' cap 33 the aperture '34e is made to register with the aperture in the lead reservoir so thata lead can be taken trom the reservoir.

'The rotation ot the rotatable head 33 is limited bv a pin 37 ot said cap engaging with a slot 3G ot' the lead magazine 7.

l claims- 1.. A. magazine pencil. all the parts olf which are connectei'l `vith one another Without s0ldering, conlin'isiug in combination a easing, a. rotatable sleeve having an annular groove at its rear 'end and longitudinal opposite slits in its torvvard end, a pushing pin in said rotatable sleeve, a cap closing the rear end ot said casing, a coupling sleeve screwed ito the i'ront end ot said cap. straight inner shoulders in the front end ot' said coupling sleeve, straight bearingl faces on the rear end oit said rotatable sleeve, an intermediate sleeve onV the rear end of said rotatable sleeve bearing` with its rear end on said coupling sleeve, a cylindrical piece on the 'torivard end of said intermediate sleeve engaging with au annular lgroove oi: said rotatable sleeve7 a slit rear end on said pushing pin and a cross head threadablv engaging in said rotatable sleeve and said rear end oit said pushing pin and engaging Wit-h the internal threads o said threaded sleeve.

2. A pencil holder as claimed in clailn l comprising in combination with an outer easing tapered at one end, a rotatable sleeve having` an annular groove intermediate the ends thereotl and longitudinal slits in its 'torivard end, an enlarged head at the other end of said sleeve. a coupling sleeve loosely arranged between said casing and saidrotat able sleeve and slidablv connected to said rotatable sleevm a cap screwed onsaid coupling; sleeve. ttor closing` and actuating said rotatable sleeve, an iiiterniediatebush inserted between said casing an d sai drotatable sleeve and having external threads at the toi-Ward end, a connecting sleeve screwed on Y said bush, an inner conical shoulder in said L connecting sleeve 't'or clamping purposes, an internallv threaded sleeve, a conical collar at the rear end of said-threaded sleeve1r a cylindrical piece or ivasher inserted into the annular groove ot said rotatable sleeve and adapted to form an abutment against said internallv three-.ded sleeve `when clamped by said connecting sleeve, a cross head threadi-wdlv engaging said threaded sleeve, lateral threaded arins ot said cross head passing through the slots ot said rotatable sleeve, a pus iing pin shittable in said rotatablesleevm and a magazine cylinder screived onto said conneetii'ig sleeve and surrounding said threaded sleeve so as to forno a space therebetiveen V'tor spare leads.

ln testin'ionv whereof. `l aiiix inv signature.

noon nassrnsnn.

Images