US2643442A

US2643442A - Retarding thrust file holder

Info

Publication number: US2643442A
Application number: US290745A
Authority: US
Inventors: Tury Eugene
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-05-29
Filing date: 1952-05-29
Publication date: 1953-06-30
Anticipated expiration: 1970-06-30

Description

June 30, 1953 E. TURY RETARDING THRUST FILE HOLDER 2 Sheets-Sheet 1 Filed May 29, 1952 INVENTOR 06.5115 702) x {we BY %Wflmmz ATTORNEYS June 30, 1953 TURY RETARDING THRUST FILE HOLDER Filed May 29, 1952 2 Sheets-Sheet 2 INVENTOR fuaaus 7Z/ev ATTORNEYS Patented June 30, 1953 UNITED STATES PATENT; OFFICE V I 2,643,442 i .RETARDING THRUST FILE HOLDER EugeneTury, Alexandria, Va-.:' I Application May 29, 1952, Serial No. 290,745

3. (dlaims. (01. 29-80) This invention relates to file holders, and more particularly has reference to a file holder adapted mainly, but not necessarily, to the support of an automobile body sheet metal file.

Files of the type stated are generally fixedly associated with the holders in which the files are mounted, and as a result, the initial movement of the holder imparted thereto during use causes the supported file to bite into the work instantly. As a result, a considerable amount of energy must be expended in giving movement to the holder and the file supported therein. Since the holder and its associated file must be reciprocated constantly, the worker tends to'become fatigued and is unable to complete the assigned task with the rapidity desired.

It is, accordingly, the main object of the present invention to provide a holder so designed as to eliminate the initial resistance to the thrust given the holder and file at the start of their movement over the work.

Another important object is to provide a holder of the type stated so designed as to permit the file and holder to be held against relative movement whenever desired, thus to permit use of the device as a conventional, fixedly connected file holder.

A further important object of the present invention is to provide a holder of the type stated so designed as to permit the file to be attached to or removed from the remaining parts of the device with considerable speed and ease.

Yet another important object is to provide a file holder which will be rugged, can be manufactured at relatively low cost, and will comprise a minimum of parts simply arranged.

Other objects will appear from the following description, the claims appended thereto, and from the annexed drawings, in which like referenee characters designate like parts throughout the several views, and wherein:

Figure 1 is a side elevational view of a file holder formed in accordance with the present invention, a conventional file being mounted on the holder;

Figure 2 is a top plan view;

Figure 3 is a longitudinal sectional view, taken substantially on line 3-3 of Figure 2;

Figure 4 is a view similar to Figure 3, illustrating the parts as they appear immediately after the holder has been given its initial forward movement;

Figure 5 is a transverse sectional view taken on line 5-5 of Figure 3;

Figure 6 is a transverse sectional view taken substantially on line 5-6 of Figure 3;

- Figure '7 is a transverse sectional view'taken substantially on line 'l--l of Figure 3; and

Figure 8 is a transverse sectional view take substantially on line 8-8 of Figure 3. 1

Referring to the drawings in detail, the reference numeral 10 designates generally a slide embodied in the construction, said slide being formed with an elongated, flat web [2 integrally formed at opposite sides thereof with depending side flanges I4. The lower edge portions of the side flanges [4 are bent'outwardly and folded upon themselves to form longitudinal guides l6 projecting outwardly in opposite directions from the respective sides of the slide Ill, and extending through the full length of said slide.

Fixedly mounted upon the web l2, contiguous to the rear end thereof, is an upstanding handle 18, which may be of any desired configuration, and is adapted to receive one hand of the user. The handle 18 will be termed, for purposes of clarity, a rear handle, to-distinguish it from a front handle 20 mounted upon the forward portion of the web l2 and adapted'to receive the other hand of the user.

It will be seen from Figures 3 and 4 that I secure the front handle 20 'to the body l2 of the slide by means of a screw 22-""extending upwardly through the slide into the lower end of the bandle. The screw 22 serves, at the same time, to secure to the under side of the body or web [2 a rear stop plate, generally designated 24, formed along its front edge with "a depending lip 26.

A front stop plate 28 is fixedly connected to and projects beyond the front end of the slide Ill. The front stop plate 28 is formed, in this connection, with a depending stop flange 30 along its projecting front edge. The stop flange 30 extends downwardly below the plane of the web l2 a substantially greater distance than'the lip 26 of the rear stop plate (see Figures 3 and 4), and is provided on its near surface with a resilient cushion 32.

A spring 34 is connected at its opposite ends to the rear end of the slide l0, and the rear end of a'retainer 36, the retainer 36, like the slide l0, being readily formed from a single piece of flat metal material having a flat body 38 formed integrally along opposite sides thereof with upwardly and inwardly extended guide flanges Ml complementary to and receiving the guides [6 of the slide [0.

Formed upon the rear end of the body 38, and disposed medially between the opposite sides of said body, is an upstanding, apertured earn in which the rear end of the spring 34 is hooked, thefront end of-said springbeing hooked through an opening 43 formed in the web 12 contiguous to the rear edge thereof.

Mounted upon the front end portion of the retainer 36 is an upstanding abutment 44, said abutment being suitably cushioned and being secured fixedly to the body 38 of the retainer by a screw 46. The screw 46 also serves to connect fixedly and separably to the under side of the retainer the front end of a conventional file 48. The file 48 is provided at the front and rear ends thereof with countersunk, longitudinally aligned openings receiving, respectively, the screw 46 and a screw 50 that fastens the rear end of the file to the retainer. The screw 58, as will be noted from Figures 3 and 4, is threadable into a nut 52 welded or otherwise fixedly connected to the body 38 adjacent the rear end of said body.

In some instances, the user may desire to operate the device as a conventional file holder, wherein the file supported thereby is fixedly related to the remaining parts of the assembly, including the handles. In this event. a screw 56 carried by the slide l and threadable in a nut 58 welded to the under side of the slide, is

threaded downwardly into a nut 54 welded or otherwise fixedly connected to the upper surface of the body 38 in a manner particularly well shown in Figure 8. When the screw 56 is threaded downwardly in this manner, the slide I0 is held against movement relative to the retainer 36.

Normally, however, the slide H) has sliding movement longitudinally of the retainer. Thus, in use, after a suitable file 48 has been secured to the under surface of the retainer, the device is applied to the work with the parts in the positions thereof illustrated in Figure 3.

The user then exerts forward thrust against the handles l8 and 20, and the slide i0 is given movement longitudinally and forwardly of the retainer 36 to the position illustrated in Figure 4. This movement is adapted to expand the spring 34.

It will be readily appreciated, in this connection, that there is a minimum of resistance to the forward movement of the slide 10, since the initial forward motion does not'carry with it the file 48.

The spring 34 exerts only a slight restraining force on the forward motion of the slide [0, so that the slide 10 is given momentum during its forward motion simultaneously with engagement of the rear stop plate 26 against the cushioned abutment 44 of the retainer. Continued forward movement of the slide l0 then has the effect of carrying with it the .retainer 36, so that the file 48 is forced across the work piece, not shown.

When the file 48 has been moved across the work a desired distance, the entire assembly is raised slightly in the same manner in which a conventional file holder is raised preparatory to return thereof to its initial starting position. As a result, the spring 34 is permitted to exert its normal tendency to. contract, and this results in a return of the slide 10 and retainer 36 to the positions illustrated in Figure 3. The operation is then repeated until the work piece has been filed down to the desired extent.

The main advantage in the construction resides in its adaptability for imparting forward motion to the file 48 without requirement on the part of the user of exerting an additional force usually necessary to start the file on its forward travel. As has been mentioned here-- inbefore, ordinarily, when a file is placed against a piece of work, it will bite into the surface of the work, and it is quite difllcult to overcome its initial tendency to remain stationary. With the device illustrated and described, however, the slide I0 is allowed to move forwardly almost without restraint, so that it will have gained momentum at the time it engages the retainer 46 for the purpose of moving the file across the work.

It is also believed to be an important characteristic of the device that it can be used as a conventional file holder whenever desired by engaging the screw 56 with the retainer 36.

It maybe noted that when the spring 34 is allowed to contract at the end of the forward travel of the file 48, the front stop plate 30, which extends downwardly into the plane of the body 38 of the retainer, will limit forward movement of the retainer under the action of the spring 34.

It is believed apparent that the invention is not necessarily confined to the specific use or uses thereof described above, since it may be utilized for any purpose to which it may be suited. Nor is the invention to be necessarily limited to the specific construction illustrated and described, since such construction is only intended to be illustrative of the principles of operation and the means presently devised to carry out said principles, it being considered that the invention comprehends any minor changes in construction that may be permitted within the scope of the appended claims.

What is claimed is:

1. In a file holder, a retainer adapted for the mounting of a file thereon and including a pair of longitudinal guide fianges extending along opposite sides thereof; a slide mounted upon the retainer for movement longitudinally of the retainer, said slide including a handle adapted to be grasped by a user and a pair of longitudinal guides received within the guide flanges; a spring extendingv between the slide and retainer, respectively, and yieldably restraining the slide against movement relative to the retainer in one direction; stops on the slide and retainer, respectively, arranged to contact one another after movement in said direction by the slide relative to the retainer through a predetermined disstance, said stops engaging the slide and retainer for joint movement in the same directionafter travel of the slide over said distance; and a stop on the slide positioned to limit movement of the retainer relative to the slide in an opposite direction under the action of the spring, said first and said second-named stops being relatively arranged for spacing the first-named stops apart in the retainer-engaging position of the second-named-stop, and for effecting contact between the first-named stops when the retainer is spaced from and is out of engagement with said second-named stop.

2. In a file holder, a retainer adapted for the mounting of a file thereon, said retainer including a fiat, generally elongated body and a pair of longitudinal guide flanges extending along opposite sides of said body; a slide mounted upon the retainer for movement longitudinally of the retainer, said slide including a fiat web paralleling and spaced above said body, a pair of handles extending upwardly from the web and adapt d t b rasped by a user, and a pair of longitudinal guides extending along opposite sides of the web and received within the guide flanges; a spring extending between the slide and re tainer, respectively, and yieldably restraining the slide against movement in one direction relative to the retainer; a pair of interengageable stops mounted upon the slide and retainer, respectively, and disposed within the space between said Web and body, one of said stops depending from the web in said space and the other stop projecting upwardly from the body in the path of said depending stop to contact the same after movement in said direction by the slide relative to the retainer through a predetermined distance, said stops engaging the slide and retainer for joint movement in said direction after travel of the slide over said distance; and a stop on the slide positioned to limit movement of the retainer relative to the slide in an opposite direction under the action of the spring, said .pair of stops and last-named stop being relatively arranged for spacing apart of the stops of said pair in the retainer-engaging position of the last-named stop, and for effecting contact between the stops of said pair when the retainer is spaced from and is out of engagement with the last-named stop.

3. In a file holder, a retainer adapted for the mounting of a file thereon, said retainer including a flat, generally elongated body and a pair of longitudinal guide flanges extending along opposite sides of said body; a slide mounted upon the retainer for movement longitudinally of the retainer, said slide including a flat Web paralleling and spaced above said body; a pair of handles extending upwardly from the web and adapted to be grasped by a user, and a pair of longitudinal guides extending along opposite sides of the Web and received within the guide flanges; a spring extending between the slide and retainer, respectively, and yieldably restraining the slide against movement in one direction relative to the retainer; a pair of interengageable stops mounted upon the slide and retainer, respectively, and disposed within the space between said web and body, one of said stops depending from the web in said space and the other stop projecting upwardly from the body in the path of said depending stop to contact the same after movement in said direction by the slide relative to the retainer through a predetermined distance, said stops engaging the slide and retainer for joint movement in said direction after travel of the slide over said distance; a stop on the slide positioned to limit movement of the retainer relative to the slide in an opposite direc tion under the action of the spring, said pair of stops and last-named stop being relatively arranged for spacing apart of the stops of said pair in the retainer-engaging position of the last-named stop, and for effecting contact between the stops of said pair when the retainer is spaced from and is out of engagement with the last-named stop; and means for releasably holding the slide and retainer against movement relative to one another in either direction.

EUGENE TURY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,350,779 Lapkofi June 6, 1944 FOREIGN PATENTS Number Country Date 179,587 Great Britain May 12, 1922