US1684011A - Filing fixture - Google Patents

Description

Sept. 11, 1928. 1,684,011

A. J. CICHON FILING FIXTURE Filed April 1925 2 Sheets-Sheet 1 gnbento'a AZBEBT J. 6/6/ 0 Sept 11, 1928.

A. J. CICHON FILING FIXTURE Filed April 7, 1925 2 Sheets-Sheet 2 gwuzntoz ALBERT-J. 6/6/70 Patented Sept. 11, 1928.

UNlTE STATES assen ALBERT J. CIOI-ION, OF SAN ANTONIO, TEXAS.

FILING FIXTURE.

Application 'file'd April 7, 1925. Serial No. 21,416.

This invention relates to improvements in filing fixtures particularly adaptable for use in connection with watch makers lathes.

An important object of the invention is to provide a fixture of the above ment1oned character which will permit the accurate and smooth filing of shoulders on watch stems.

A. still further object of the invention s the provision of a device of the above men tioned character which will permit the filing er watch stems and other comparatively small parts with great accuracy and speed.

A still further object of the invention to provide a filing iixturewhich." is com- 3 paratively simple in construction, durable,

accurate and eflicient for the purpose intende'd. L

Other objects and advantages of this in vention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same:

' Figure 1 is a side elevation of my improved device showing the same mounted in association with a lathe, r

Figure 2 is a transverse sectional view taken on the line 22 of Figure 1, 30

taken on the line 3"3 of Figure 2,

Figure 4 is a top plan view of my device, Figure 5 is a "vertical sectional view taken on the line 5-5 of Figure 2,

Figure '6 is a front elevation with a por tion of the device removed,

Figure 7 is a erspective view of an adjustable guide str1p; Figure 8 is a front elevation of theadjustto able plate member,

Figure 9 is a perspective view of a key to he used in connection with the'device,

Figure iois an end elevation of the adjustable plate, v I

Figure 11 is a vertical sectional view taken "on the line 11; 11 ofFigure- 6, Y v

Figure 12 is a side elevation of a spindle which may be'employ'ed in connection with my device. p v

Figure 13 is rear elevation taken on the i of Figure 1.; and V e elem-lites elevation or a line 13 TH Figure 3 is a horizontal sectional viewc'huck which may be employed to connect my device uponthe lathe.

In the drawings, wherein for the purpose.-

18 provided with a central bore for the re-- ception of a supporting element.

My invention relates more specifically to an attachment to be mounted on the shaft 18 for filing such watch stems, or the like.

This fixture comprises a supporting plate 19 having a comparatively wide recess 29 formed in the rear face thereof o'ne Wall of the'groove being preferably undercut at an angle to provide a guide groove. The opp-o site wall is grooved to receive an adjustable guide strip 21, innerof which is beveled to conform to the inclined Wall of the first mentioned grooveand form retaining guide. The lower end of the body plate is recessed in the central portion as at 22 fer the reception of the head of an adjusting screw which will be more fully described as the description progresses. v I

plate 23 is mounted to slide vertically within the recess 20, the vertical edges thereof being beveled as at 24 to engage the inclined sides of the groove and guide strip.

An opening 25 is formed thro gh the plate 23 adjacent the upper end while the central portion of the lower edge-is recessed as at 26. for a purpose to be hereinafter more fully described. A vertically extending threaded bore 27 is forn'i'e'd in substantially the central portion of the plate 23 and, at its lower end. opens into the recess 26, this bore being'adapted receive an djustin screw 28. The lower extremity of the adjusting screw 28 is journaled in a transverse bearing strip 29 se'cured to th'elower edge of the plate 19 andmay be adjusted by means of a head 30 the peripheral edge of which is knurled. It is obvious that by. rotation f the screw the plate lamey be vertically adjusted with relation to the plate 23;. ,p

The'outer face of the plate 23 is provided,- adjacent onset the beveled edgesthe'eef,

or other desired measurement and adapted to correspond with similar graduations 32 formed upon the beveled edge of a gauge plate 33. This gauge plate is secured to one of the side extensions of the body or sup porting plate 19 by a machine screw or in any desirable manner. The front face of the plate 19 carries a pair of angular supporting brackets secured to the body by means of screws 35 and provided at the outermost extremities with apertured extensions forming bearings 36. These brackets are adapted to rotatably support a pair of rollers 37 provi-ded with reduced extremities for engaging the bearings 36 and suitable bearing seats formed in the body. It is to be noted that these rollers are spaced above the bracket to prevent contact therewith and permit movement of a file or similar tool upon the upper sides thereof.

The device is retained in association with the tail stock of the lathe by means of a stem 38 which comprises a substantially conical head 39 and a tapered shank 40. The outer face of the head 39 is provided with a cylindrical boss 41 located at the center thereof and adapted to engage a suitable recess formed in the rear face of the plate 23, the plate 23 being secured to the head 39 of the stem by means of a screw 42 fitted through the aperture 25 in theplate and threaded into a bore formed in the stem. A projecting stud 43 is formed adjacent the lower portion of the taper base 39 and is adapted to engage a suitable aperture 44 formed in. the plate 23 immediately beneath the opening 25 thus preventing displacement of the stem and the plate. The shank of the stem is fitted into a suitable bore formed in the tail stock shaft 18 and is held against displacement by apin 45 adapted to extend through registering openings in the tail stock shaft and shank 40. In some instances it may be desirable to connect the device with the lathe tail stock by means of a spindle 46 having.

a head of construction similar to the head 39, the spindle being of comparatively large diameter and cylindrical forconnection with the tail stock. I also contemplate the use of a spindle 47 clearly shown in Figure 14 for the connection of the device to the tail stock, the spindle comprising, in this instance, a somewhat shorter body provided with a reduced threaded extension 48 for connection with the tail stock.

It will be noted that the plate 19 is adjustable relative to the plate 23 and in order to insure accuracy in the relative movement of these platesI have provided the adjustable guide strip 21. This strip is positioned between one of the beveled edges of the plate 23 and the body groove and may be adjusted horizontally by a pair of adjusting screws 49 threadedly mounted through the sides of the body and adapted to contact with the guide strip.

In use, my improved fixture may be readily mounted upon the conventional types of lathes, usually employed in the manufacture or repair of jewelry. While the device is particularly intended for jewelry work and operations 'of this character it is by no means restricted to this particular use and may be advantageously employed in connection with numerous types of machines for filing and repair work. After the fixture has been securely fastened to thelathe tail stock, the work is secured in the head stock and the device adjusted to the predetermined measurement. If the work consists in the filing of a watch stem, shown for example in Figure 1, the plate 19 is suitably adjusted relative to the plate 23 by operation of the screw 28, the related graduations upon the adjusting plate and gauge plate indicating the proper position of the fixture. The watch stem is then properly positioned by adjustment of the tail stock 16 and a suitable file moved horizontally over the rollers 37, this operation continuing until the material upon the stem has been reduced to the proper dimension. The device is capable of employment for numerous additional operations such as filing shoulders and projections.

It is to be understood that the form of my invention herewith shown and described is to be taken as the preferred example of the same and that various changes as to the shape, size andarrangement of parts may be'resorted to without departing from the spirit of the invention or the scope of the subjoined claims. 7

Having thus described my invention, I claim:

1. A file supporting attachment for lathes comprising a supporting member, means carried by the member for attachment to'the tail stock of the lathe and arranged to support the said supporting member in vertical position and in a plane at right angles to the axis of the tail stock, a plate mounted upon the said supporting member for vertical adjustment thereon, a screw vertically mounted upon the plate and having threaded engagement with the supporting member .whereby to effect vertical adjustment ofthe' plate in the rotative adjustment of the screw, brackets extending forwardly f in spaced relation to each other from the face of the plate, and rollers rotatably mounted in horizontal position at theupper sides of the brackets to support a file. I

2. A file supporting attachment for lathes comprising a supporting member, means for mounting the member upon the tail stock of a lathe, the saidmember comprising a plate having beveled vertical edges, a

plate disposed against the supporting plate for vertical adjustment with respect thereto and having a recess accommodating the said supporting plate, the Walls of the recess being undercut, one of the said Walls having a bevel to fit the corresponding Vertical edge of the supporting plate, a guide strip Within the other undercut Wall of the recess coacting With the other vertical edge adjusting the second mentioned plate, and horizontally disposed, spaced rollers mounted upon the face of the said second men tioned plate to support a file.

In testimony whereof I aflix my signature.

ALBERT, J. oIoHoN.

of the supporting plate, means for adjust- 1 ing the guide strip, means for vertically

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