US2816362A

US2816362A - Scribing apparatus

Info

Publication number: US2816362A
Application number: US596015A
Authority: US
Inventors: Harry V Daugherty; Allen A Daugherty
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-07-05
Filing date: 1956-07-05
Publication date: 1957-12-17
Anticipated expiration: 1974-12-17

Description

Dec. 17, 1957 2,816,362

VH. V. DAUGHERTY EI'AL vSCRIBING APPARATUS Filed July 5, 195e IN V EN TORS.

HARRY V. DAUGHERTY ALLEN A. DAUGHERTY A 7' TORNE V United States vPatent O SCRIBING APPARATUS Harry V. Daugherty and Allen A. Daugherty, Wichita, Kans.

Application July 5, 1956, Serial No. 596,015

2 Claims. (Cl. 33-42) This invention relates to scribing and means therefor. In a more specific aspect this invention relates to a scribing instrument structurally designed and particularly suited to be carried in the pocket. ln a still more specific aspect this invention relates to adjustable scribing apparatus for metal having its own guide means or which can be used with other guide means, and which can be safely carried in the pocket with the sharp scribing portions of the instrument safely recessed in the body of the instrument.

Scribing or marking apparatus has long been known in the art, and the known structures all have their disadvantages. Some of the known structures are limited in use, not having guide means for marking along the edge of metal sheet or plate Others which have such are not designed for transverse or longitudinal marking in the central portion of relatively long or wide members. And, the devices of the prior art having both means almost without exception are not of such structurel that they can be carried in the pocket safely, that is, with the sharp marking portions covered. The new scribing apparatus of our invention overcomes the disadvantages of the prior art devices and uniquely so, so that ease of use and adjustability is not sacrificed.

` The new scribing apparatus of our invention has a body member which has an aperture therein wherein is 'slidably mounted a marking member having marking means in at least one of its end portions. This marking member can be retracted into the body with the marking end portion recessed, and it can be extended to expose the marking end portion for use. The body member has an opening therein communicating with the aperture in the body having the marking member. The adjusting member of our instrument is slidably mounted on the instrument body. It is connected to move the marking mem'- ber by means slidable in the opening in the body. The adjusting member preferably bears against the body to hold the marking member in desired position.

It is an object of this invention to provide new scribing or marking means.

It is another object of this invention to provide new scribing instrument means for metal which can safely be carried in the pocket.

Yet another object of this invention is to provide a new adjustable scribing device for metal having its own guide means or which can be used with other guide means, and which can be safely carried in the pocket when not in use.

Other objects and advantages of the new scribing apparatus of our invention will become apparent to those skilled in the art upon reading this disclosure.

Drawings accompany and are a part of this disclosure. Such drawings depict preferred speciiic embodiments of the new scribing apparatus of our invention, and it is to be understood that such is not to unduly limit the scope of our invention. In the drawings,

Fig. 1 is a side elevation view of a preferred specific embodiment of our new scribing apparatus.

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Fig. 2 is an enlarged view taken on line 2-2 of Fig. l.

Fig. 3 is an enlarged view taken on line 3-3 of Fig. 1.

Fig. 4 is an enlarged and exploded perspective view of the adjusting member of the scribing apparatus of Figs. 1 and 3.

Following is a discussion and description of the new `scribing apparatus of our invention made with reference to the drawings whereon the same reference numerals are used to indicate the same parts or structure. The discussion and description is of preferred specic embodiments of the new scribing apparatus, and it is to be understood that such is not to unduly limit the scope of our invention.

The embodiment of the new metal scribing device of our invention `shown in the drawings has an elongated body 6 which is preferably made of a hard material which will withstand a great deal of surface wear, such as a very hard wood; hard, pressed, plastic composition materials; metal; and the like. Formed plastic or resin, board materials having fillers therewith to make them hard and rigid have been found particularly suitable. The body has a longitudinal aperture therethrough which retains the slidably mounted marking member or slide 8. This marking member is preferably made in one piece out of hardened steel which can be used to scribe other metal, such as aluminum, magnesium, and including the common steel alloys of iron. It has pointed end portions, one of which 10 extends longitudinally, and the other of which 12 extends transverse of the central shank portion of the slide or marking member 8. The pointed end 10 is preferably used with a rule or other guide means to scribe metal, and the end 12 is preferably used to mark along the edge of a metal sheet or bar, using the end 14 of body 6 asy a vguide and running along the edge of the Sheet or bar. Body 6 has a lower slot 16 in one of its end portions toreceive and recess point 12 of slide 8, and point 10 yrecesses in the aperture in the other end of body 6. The marking member 8 is preferably made about the same length as body 6, so both points 10 and 12 can be recessed and covered at the same time. This makes a compact anclv safe scribe to carry in the pocket. In Fig. l the dotted lines show slide 8 in extended and retracted position. Body 6 preferably has metal pins 15 to strengthen the side walls of slot 16, and the slot is extended to internal shoulder 17 so that point 12 can be received during full extension of pointed end 10.

The new scribing device of our invention has a unique adjusting member 18 which rides and bears on the top surface of body 6. The top surface of body 6 has a longitudinal slot 19 therein which communicates with the slide retaining aperture therethrough and slot 19 is closed at both ends to limit the travel of the adjusting member 18 and thus the marking or slide member 8. Dotted lines 21 and 23 (Fig. l) indicate the outer ends of slot 19. The adjusting member 18 is connected to slide 8 in any suitable manner,'preferably by rivet-type pins 20 which pass through and are connected to slide 8 and saddle 25 of the adjusting member. Saddle 25 is made with holes 27 therein to receive pins 20. Pins 2t) move in slot 19 when the instrument is adjusted to desired position. A block member 24 extends from the underneath side of saddle 25 to the top of slide 8 and its length is indicated in dotted lines on Fig. l. The block member 24 fits snugly between saddle 25 and slide 8, with pins 20 passing therethrough through holes therein. Block 24 keeps the slide from binding due to twisting force when 'saddle 25 is moved to in turn move slide 8. Shoulder members 29 are pivotally mounted by pins 31 on each end `of saddle 25, pins 31 passing through holes 33 in saddle 25 and holes 35 in shoulders 29. The pins of the adjusting member can be secured in any suitable manner such as -by attening the ends thereof. A leaf spring 36 is mounted between the inner end portions of shoulders 29 with the ends of the spring resting against pin 31 (Fig. 3) or in the crack between pin 31. and shoulder 29, if desired, and this spring continuously urges shoulders 29 to pivot outwardly so that the outer portions thereof bear against the flat top surface of body 6, resulting in frictional drag and resistance to movement of saddle 25 and slide 8. Thus, when the poin-t 12 of the scribe is set a desired distance from the end 14, or point 10 is extended a desired distance from the body 6, it will remain there against jarring, vibration and relative small pressure on slide 8.

A calibrated plate 40 can conveniently be mounted in the side of the instrument in the end having point 12, 'and the -outer portion of the shoulder 29 nearest thereto can be used as an indicator to set the point 12 at a known distance from the end 14 of the Vbody 6. In this manner a sheet or bar of metal can be scribed at a given distance along its edge solely with the new scribing instrument of our invention.

As will be evident to those skilled in the art, various modifications of this invention can be made, or followed, in the light of this disclosure and discussion, without departing from the spirit or scope of the disclosure or from the scope of the claims.

We claim:

1. Scribing apparatus, comprising, in combination, an elongated body member having a at upper surface, a longitudinal aperture through said body member between its upper and lower surfaces, va marking member slidably mounted in said aperture and retained in said body member by said aperture, said marking member having pointed end portions one of which extends longitudinally thereof and the other of which extends substantially at right angles thereto and said marking member being mounted so that both end portions can be recessed in said body at the same time and so that said end portons can be separately projected out of theirrespective end portions of said body, a longitudinal slot having closed end portions in said upper surface of said body member communicating with said aperture, an adjusting member slid ably mounted. on said upper surface, pin means projecting through said slot and rigidly connecting said marking member and said adjusting member so that same move in unison, saidv adjusting member having a saddle member tting over the top of said `body member, a pair of oppositely disposed shoulder members pivotally mounted on said saddle member, said shoulder members having outer portions adapted to bear against said flat upper surface to maintain said marking member in desired position, and said adjusting member having leaf spring means mounted thereon to exert force on the inner portions of said shoulder members to urge same into contact with said upper surface.

2. Scribing apparatus, comprising, in combination, a body member, an aperture through said body member, a marking member slidably mounted in said aperture, said marking member having pointed end portions one of which extend longitudinally thereof and the other of which extends transversely thereof and said marking member being mounted so that both end portions can be recessed in said body at the same time and so that said end portions can be separately projected out of their respective end portions of said body, a slot having closed end portions in said body member communicating with said aperture, an adjusting member slidably mounted on said lbody member, connecting means projecting through said slot and connecting said marking member and said adjusting member so that same move in unison, said adjusting member having a base member von the outside of said body member to which said connecting means is attached, a pair of oppositely disposed shoulder members pivotally mounted on said base member, said shoulder members having outer portions shaped and constructed to bear against the outer surface of said body member to maintain said marking member in desired position, and said adjusting member having spring means mounted thereon to exert force on the inner portions of said shoulder members to urge same into contact with said surface of said body member.

References Cited in the le of this patent UNITED STATES PATENTS 99,917 Lamb Feb. 15, 1870 389,647 Hall et al. Sept. 18, 1888 1,109,444 McLaughlin Sept. 1, 1914 1,397,569 Zetterman Nov. 22, 1921 1,402,774 La Dow Jan. 10, 1922