US1970399A

US1970399A - Locking device

Info

Publication number: US1970399A
Application number: US673811A
Authority: US
Inventors: Shatkin Aaron
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-06-01
Filing date: 1933-06-01
Publication date: 1934-08-14
Anticipated expiration: 1951-08-14

Description

A. SHATKIN LOCKING DEVICE Aug. 14, 1934.

Filed June 1, 1933 INVENTOR ATTORNEY Patented Aug. 14, 1934 PATENT 1,970,399 LOCKING DEVICE Aaron Shatkin, Brooklyn, N. Y. Application June 1,1933, Serial No. 673,811

9 Claims. (01.1120-9) My present invention relates to locking devices, particularly of the type adaptable in collapsible housings for writing instruments.

The objects of this invention are to provide a novel and improved locking device of the char acter mentioned, which looks the housing aforesaid when the latter is collapsed, which requires no manualr-otary motion either at looking or unlocking of the telescopic housing elements, and

which is simple in construction, certain in operation and convenient in use.

To attain these objects, in an embodiment of my present'invention in a collapsible housing for writing instruments, which housing includes 'aseries of telescopically associated tubular elements, I provide a headed member which is secured to the innermost tubular. element of the housing; the head .of which member projects within the housing towards the outermost memher, a pair of gripping elements, mounted in the outermost tubular member, adapted to close in upon and secure the said head between them when the telescopic housing is closed or collapsed against the action of a spring which acts upon the gripping elements to maintain their closed condition, and to unlock or release the grip upon said headed member, I provide a button member which is slidably mounted at the extremity of the outermost tubular member of thehousing,

which button when pushed inwardly against the action of a spring, is adapted to move the grip-,- ping elements to free theirihold, whereupon the housing becomes extended. I

This inventionis capable of numerous forms and various applicationswithout departing from the essential features herein disclosed. It .is therefore intended and desired that the embodi-L ment shown herein be deemed illustrative and not restrictive, and that the patent shall'cover'whatever features of patentable novelty'exist in the invention disclosed; reference being had to the appended claims rather than to the specific description herein, to indicate the scope" of the invention. v i g In theaccompanying drawing, forming part of this application, similar characters of" reference, indicate corresponding parts in all the views.

Fig. 1 shows substantially, 'a central longitu O dinal section through a fully extended collapsible housing for writing instruments, which is equipped with an embodiment of the locking device which is the subjectof this application.

. i Fig. 2 shows a similar section when the housing is collapsed and locked. i e

r Fig. 3 is an enlarged fragmentary section showing the embodiment of the locking device.

Fig. 4 shows in perspective the gripping elements and the headed element of the locking device. 7

Fig. 5 isa fragmentary central longitudinal section through an extended housing, showing the construction to incorporate my locking de-, vice, when the housing includes amagazine for leads. V

Fig. 6 shows in perspective the releasing but.-. ton provided with an eraser which is included. in the embodiment shown in Fig. 5. i

Fig. '7' shows in perspective the inner end tubular element included in the embodiment shown in Fig. 5.

In the drawing, the numeral 10, designates generally a collapsible housing for writing instruments, comprising the

concentric tubes

11, 12 and 13, which slide co-axially within one another. Provision is made by the'inward beads 14, and the outward beads 15, to prevent the several tubes from coming apart, and the .end 16, of the tube 12, is drawn in a little so as to prevent said tube 12, from sliding out when the housing 10 is collapsed; said reduced end being unable to pass the tube 11. A head element 17, isset into the tube 11, to project therefromat its free end, and a washer 18, is secured within the tube 11, close up against the head element 1'7. Also, inside the tube 11, is secured a washer 19, having fixed therethrough, a coil 20. Secured within this coil 20-and protruding therefrom into tube 12, isua' shank 21, which terminates ina head element 22, extending-towards tube 13. I Within the tube'13, a washer 23 is free to slide, which is secured-.110 an endof a spring 24; the other end of which spring rests on thewasher'19. 1 A- hubbed bushing, generally designated by the numeral 25, having a central bore 26, is countersunk at its hub-end to provide the tapering surface 27, and is counter-bored at its other end to provide the seat 28. The tube 13, terminates in an enlarged portion 28, within which is secured the member 25, by bending over the end 29, of the enlarged portion 28; the hub of member 25thus being within the tube 13, so positioned that the surface=27 slopes towards the end 28 of the tube Resting on top of the washer 23, and through the bore, 26, of member 25, are a pair of gripping elements 30, in contact with each otherat the vertex lines'31, of their respective

angled surfaces

32 and 33; asteel ball 34,- being set within the semi-spherical sockets 35 on said vertexlines,

is individually tapered, as indicated by the numeral 38.

A button member 39, terminating in a flange 40, which is set free to slide within the counterbore of the member 25, against the actionof a spring 41, interposed between said flange 40 and,

the seat 28, serves as the terminal of the housing 10, whereto is secured the chain link 42, for at tachment of either a chain or ribbon, asthe user A ferrule 43, about the shank of the may desire. button member 39, closes the end of the tube, 13,

and is secured thereabout by turning inwardlythe end 44. It is to be noted that the tapered ends 38 of the gripping elements 30, are posie tioned within a conical socket 45 bored in the flanged end of the button member 39.

When it is desired to build the housing with provision for the storing of leads and to provide other features as hereinafter indicated, the following modification in construction is followed.

.In place of the tube 13, is a tube 45, about which is concentrically secured the magazine tube 46;

leads being .stored within the space 4'7 formed betweenthese tubes. Between a pair of annular beads 48, spun inwardly in tube.45, is secured the bushing element 49, the lower end of which has an inwardly sloping surface ,50. Along lengthwise diametrically opposite tracks51, dented in the tube 45 above the beads 48, is slidably mounted the member 52; the said tracks fitting into the surface channels 53, which are cut lengthwise along the sides ofmember. 52. Integral'with this member. 52, is a reduced portion 54, provided with a conical bore 55. A spring 56 is interposedbee tween the element 49 and the member 52. The tube 45 is closed byhaving its upper end spun over inwardly, having the. hole 5'7, however, for the passage of theshank of the button member. 58. The top end of the tube 45,, is'exteriorly threaded to receive cap 59, which serves to close the magazine chamber 47. Into athreaded bore 61, in the member 52, fits the threaded end of the shank of the button member 58, intowhich end and extending therefrom, is an eraser 60.

1 Writing mechanisms for either mechanical pencils or fountain pen, devices are mounted within thev tube 11. Such. constructions. and mountings are well known, and therefore ,arenot shown. The coil 20, may be part ofpencil mech-- anisms, but in any event, the member 21 -must' be secured in any suitable manner to either, tube 11, or the head 17, or to any-component fixedly secured to either of these. w I

In operation, the action of spring 24, distends the housing 10 and'presses the gripping elements 30 into the member 25, whereby ends 37-come closer together in their contact-with the sloping' surface 27, While ends 38 of the gripping elements 30, spread apart within the conical bore 1 45 of the button member 39.

To look the'housing', the button'39, and' the head 17 are brought towards each other whereby the housing is collapsed. The manual push of the button 39 overcomes the action of the spring 24, shifts the gripping elements '30 in the di- 'per elements 30, and spring 24 will force the rection of its motion, bringing the ends 38 together within the conical bore 45, whereby the 7 lower ends of the elements 30 are spread apart to admit the head 22, within the sockets 36. Now holding the housing 10 collapsed and momentarily releasing hold of the button 39, will cause spring 24 to push the gripping elements 30 into member 25, whereby the hold onto the head 22 will be secured, and the shank 21 will be gripped.

Toopen the housing, push the button 39 towards the head 17, against the spring 41, whereupon the ends 38 of the gripper elements 30 will come to- :gether within the conical bore 45, whereupon the head22 will be released from the hold of the gripextension ,of the housing 10 to its open length.

In the embodiment shown in Fig. 5, since the element 52, is restrained from rotary motion, the

vbutton 58, can be easily unscrewed when it is desired to use the eraser 60. In this modified construction, it is evident that the locking device operates in a manner precisely the same as in the construction shown in Fig. 1.

; I claim:- a

1. In combination with a collapsible housing for writing instruments which includes telescopic tubularelements, agripping means, normally in closed position, mounted within an end tubular element of the housing, a shank member associated with the other end element of the housing, adapted to be held by the gripping means when the housing is collapsed and said shank member admitted in the gripping means, a means to open the gripping means for the admission of the shank member therein and its release therefrom, and a flexible means mounted within the housing adapted to extend the telescopic tubularelements aforesaid, upon release of the shank memberfrom the hold of thegripping means.

2. In combination with a collapsible housing 115 for writing instruments which includes telescopically associated tubular elements, a pairof gripping elements pivotally related with each other, mountedwithin an end tubular element of the housing, and normally in closed position, means to move thegripping elements into open position, a shank member. associated with the other end element of the housing, adapted to be held between" the gripping elements when the housing is collapsed and said shank member is admitted between the gripping elements, and a flexible means mounted within the housing adapted to extend the telescopic tubular elements aforesaid, upon-release oi-the' shank member from the hold of the grippingelements. 3-

3; .Incombination' with a collapsible housing for writing instruments which includes-telescopically-associated tubular elements, a pair of gripping. elementspivotally related with each other, mounted within an end tubular element of the housingrand normally in closed position; eachof said gripping elements being provided with a socket, means to move the gripping elements into open position, a headed member associated with theother end element of the housing, adapted to lei-7; be held between the gripping. elements when the housing is collapsed and the head of said member is admitted-within the sockets in the gripping elements, anda flexible means mounted within the "housing, adapted to extend said telescopic i tubular elements upon release of the headed member from the hold of the gripping elements.

4.Incombination with a collapsible housing for writing instruments which includes telescopically associated tubular elements, a pair'of grip- 55 ping elements pivotally related with each other, mounted within an end tubular element of the housing and normally in closed position, a button member extending from and slidably mounted within said end tubular element, adapted upon being manually slid into said tubular element, to move the gripping elements into open position, a spring to shift the button element to its outermost position with respect to the tubular element with which it is associated, a shank member associated with the other end element of the housing, adapted to be held between the gripping elements when the housing is collapsed and said shank member is-admitted between the gripping elements, and a spring mounted within the housing, adapted to extend the telescopic tubular elements aforesaid, upon release of the shank member from the hold of the gripping elements when the button member is shifted to open the gripping elements.

5. In combination with a collapsible housing for writing instruments which includes telescopically associated tubular elements, a pair of gripping elements pivotally related with each other, mounted within an end tubular element of the housing, and normally in closed position; each of said gripping elements being provided with a socket, a button member extending from and slidably mounted within said end tubular element, adapted upon being manually slid into said tubular element, to move the gripping elements into open position, a spring to shift the button element to its outermost position with respect to the tubular element with which it is 1 associated, a headed member associated with the other end element of the housing, adapted to be held between the gripping elements when the housing is collapsed and the head of said member is admitted within the sockets in the gripping elements, and a spring mounted within the housing, adapted to extend the telescopic tubular elements aforesaid, upon release of the headed member from the hold of the gripping elements when the button member is shifted to open the gripping elements.

6. In combination with a collapsible housing for writing instruments which includes telescopically associated tubular elements, a pair of gripping elements pivotally related with each other, mounted within an end tubular element of the housing, a shank member associated with the other end element of the housing, adapted to be held between the gripping elements when the housing is collapsed and said shank member is admitted between the gripping elements, a spring mounted within the housing acting to close the gripping elements and adapted to extend the telescopic elements aforesaid upon release of the shank member from the hold of the gripping elements, and means to shift the gripping elements into open position.

'7. In combination with a collapsible housing for writing instruments which includes telescopically associated tubular elements, a pair of gripping elements pivotally related with each other, mounted within an end tubular element of the housing; each of said gripping elements being provided with a socket, a headed member associated with the other end element of the housing, adapted to be held between the gripping elements when the housing is collapsed and the head of said member is admitted within the sockets in the gripping elements, a spring mounted within the housing acting to close the gripping elements and adapted to extend the telescopic elements aforesaid upon release of the headed member from the hold of the gripping elements, and means to shift the gripping elements into open position.

8. In combination with a collapsible housing for writing instruments which includes telescopically associated tubular elements, a bushing member, having an inwardly sloping surface, secured within an end tubular element of the housing, a pair of gripping elements pivotally related with each other intermediate their ends, slidably mounted within the bushing member; one end of each of the gripping elements sloping outwardly at the inwardly sloping surface of the bushing member, and each of their other ends being tapered and spaced, a button member, provided with a tapered socket, slidably mounted within said end tubular element of the housing and extending therefrom; the tapering spaced ends of the gripping elements being positioned to be ad-.

mitted within the socket of the button member when the latter is manually slid in their direction to bring said ends together whereby the gripping elements are shifted into open position, a spring mounted within the housing to act on the button member to shift the latter to its outermost position with respect to the tube with which it is associated, a shank member associated with the other end element of the housing, adapted to be held between the gripping elements when the housing is collapsed and said shank member is admitted between the gripping elements, and a spring mounted within the housing, acting to close the gripping elements and. adapted to extend the tubular elements of the housing upon release of the shank member from the hold of the gripping elements.

9. In combination with a collapsible housing for writing instruments which includes telescopically associated tubular elements, a bushing member, having an inwardly sloping surface, secured within an end tubular element of the housing, a pair of gripping elements pivotally related with each other intermediate their ends, slidably mounted within the bushing member; one end of each of the gripping elements sloping outwardly at the inwardly sloping surface of the bushing member, each of their other ends being tapered and spaced, and each of said gripping elements being provided with a socket, a button member provided with a tapered socket, slidably mounted within said end tubular element of the housing and extending therefrom; the tapering spaced ends of the gripping elements being positioned to be admitted within the socket of the button member when the latter is manually slid in their direction to bring said ends together whereby the gripping elements are shifted into open position, a spring mounted within the housing to act on the button member'to shift the latter to its outermost position with respect to the tube with which it is associated, a headed member associated with the other end element of the housing, adapted to be held between the gripping elements when the housing is collapsed and the head of said member is admitted within the sockets in the gripping elements, and a spring mounted within the housing, acting to close the gripping elements and adapted to extend the tubular elements of the housing upon release of the headed member from the hold of the gripping elements.

AARON SHATKIN.