US2085079A - Cutting device - Google Patents

Description

June 29, 1937. H, B DWEL 2,085,079

CUTTING DEVICE 3 Sheets-Sheet 1 Filed June 19, 1936 INVENTOP H. BROADWE LL ATTORNEY June 29, 1937. H, BROADWELL 2,085,079

CUTTING DEVICE Filed June 19, 1956 3 Sheets-Sheet 2 lNVENTOR By h. BROADWELL A 7' TORNEV June 29, 1937. H. BROADWELL CUTTING DEVICE Filed June 19, 1936 3 Sheets-Sheet 3 FIG. I?

INVENTOR y H. BROADWELL 77m "(AM ATTORNEY Patented June 29, 1937 PATENT or ies CUTTING DEVICE Howard Broadwell, Ridgewood, N. 3., assignor to Bell Telephone Laboratories, Incorporated, New York, N. Y., a corporation of New York Application June 19, 1936, Serial No. 86,060

6 Claims.

This invention relates to cutting devices and more particularly to a cutting device for cutting notches in a disc.

To facilitate the establishing of telephone calls to frequently called stations, repertory dialing devices have been devised for use at telephone stations. In some of the repertory dialing devices a code disc for each frequently called station is provided. A plurality of the code discs are mounted on a common shaft and the shaft and the driving mechanism of the repertory dialing device.

The object of this invention is to provide a cutting device for cutting the code discs of such repertory dialing devices, which will eliminate all 90 necessity of translating the subscribers codes from a series of letters and numbers into a single series of numbers and counting off these numbers with the required interdigital spacing and individually breaking off or removing the teeth in the form where teeth are used.

A feature of the invention resides in means in the cutting device for positioning a code disc relative to a cutter in the. device.

In the drawings, Fig. 1 is a view in perspective of the cutting device with a disc ready to be cut, the disc being shown in outline;

Fig. 2 is a top plan view of the disc and a portion of the cutting device, the disc having been moved to a first position for cutting;

Fig. 3 is a view similar to Fig. 2 but showing the disc after several cuts have been made;

Fig. 4 is a side elevational view, partly in section, of the disc and a portion of the cutting device;

Fig. 5 is a view similar to Fig. 4 but taken from the opposite side of the device relative to Fig. 4;

Fig. 6 is a view of the same side of the device shown in Fig. 5 but with the jaws and the operating parts of the device moved to a cutting posi- Fig. 7 is a view in perspective of a modification of the device, the code disc being of somewhat different form to that shown in Figs. 1 to 6, inclusive, and a portion of the modified cutting device being shown;

'7 and shown in somewhat reverse position relative to Fig. '7;

Fig. 10 is a view similar to Fig. 9 but showing some of the parts moved to different positions;

Fig. 11 is a top plan view of portions of the apparatus shown in Figs. 1 to 6, inclusive, and including an appliance for the cutting device; and

.Fig. 12 is a side elevational view of the portion of the structure shown in Fig. 11.

In Figs. 1 to 6, inclusive, and in Figs. 11 and 12 the code disc I is a comparatively thin disc which may be made of sheet brass or other sheet material having sufficient stiffness and wearing qualities to serve as a code disc. Teeth 2 as shown in Figs. 2, 3 and 11 are provided on the peripheral edge of the disc I, the teeth being all of the same dimensions and being separated by equal spacings. A portion of the disc I is cut out to provide a radial slot 3, the slot 3 being comparatively wide and extending from the periphery of the disc I inwardly to a point slightly beyond the axial center of the disc. The radial slot 3 is of sufficient width to accommodate a driven shaft of a repertory dialing device, not shown, and the outer end of the radial slot 3 is widened at 4 to permit ready placement of the disc I on the driven shaft of the repertory dialing device.

A spring 5 is provided on one face of the disc I, the spring being removably held in place thereon by means of spaced cups 6 secured to the face of the disc I. The spring 5 has movable leg portions I extending over the inner end portion of the radial slot 3 and bent back so that the free ends 8 lie over the face of the disc i. The bent portions 9, 9 of the spring 5 are displaceable and are moved away from each other when the disc I is being applied to a shaft of a repertory dialing device or to the cutting device and will spring back to normal position when the disc I has been placed on the shaft or in the cutting device. The spring 5, therefore, serves to hold the disc I in a required position on the shaft of the repertory dialing device or in the cutting device and will prevent accidental dislodgment of the disc I from its required position.

To make the disc I suitable for operating in the repertory dialing device, to send a required code signal, some of the teeth 2 on the periphery of the disc I are removed or shortened at predetermined spaced points thus leaving, on the periphery of the disc, blocks of teeth at spaced intervals and notches separating the blocks of teeth. The notches are made by removing or shortening the teeth at the required predetermined points and these notches represent and provide the interdigital pauses between the digit signals in the code. For instance, if a contact controlling member in a signalling system is controlled by means of the code disc I and is only permitted to send signals when the contact controlling member is riding on the teeth 2 of the code disc any portions of the code disc where the teeth 2 have been removed or shortened will cause cessation of the signals.

Toshortenor remove the teeth 2 at required predetermined points on a code disc I and thus obtain a code disc suitable for use in the repertory dialing device a disc I having its full equipment of teeth 2 is placed in the cutting device as shown in Figs. 1 and 2 and blocks of teeth 2 at predetermined points are removed or portions of the teeth are cut off by the cutting device.

The cutting device is a hand-operated tool similar to a wellknown type of hand-operated paper punch comprising handle members II! and I I and a pair of parallel operating jaw members I2 and I3. Secured in the upper jaw I2 and extending downwardly through a guide hole in the lower jaw i3 is a plunger III on the lower end of which is a cutter I5. The cutter I5 is of rectangular shape and of sumcient length to cut oif a predetermined number of teeth in one shearing operation. Secured to the lower jaw I3 by means of the screws It, I6 is an L-shaped steel bar I! that extends parallel to and outwardly beyond the lower jaw I 3. A raised portion I8 is provided on the upper surface of the steel bar I! and in line with the cutting edge of the cutter I5 and a sharp edge is formed on the raised portion IS to cooperate with the cutting edge of the cutter I5. When the handles I, II of the cutting device are moved toward each other, the cutter I moves past the sharpened edge of the raised portion I8 and any portions of teeth 2 of a code disc I caught therebetween are sheared oif.

To hold a. code disc I in position in the cutting device a stud I8 is provided on the steel arm H. The stud I9 extends upwardly from the free end of the steel arm I? to a point slightly above the level of the upper surface of the raised portion I8 and has two spaced flanges 2G, 28 formed on its upper end. The diameter of the stud I9 between the spaced flanges 20, is the same as the diameter of the driven shaft of a repertory dialing device and is: therefore adapted to receive the low the lowermost flange 20 on the stud is an indexing segment 2i for moving the code disc I to required positions for cutting. The segment 2! is pressed upwardly against the lowermost flange 29 on the stud I8 by means of a coiled return spring 22, the spring being coiled around the stud I9 and having one end 23 bent over against an edge of the steel bar I1 and the other end 24 hooked over and engaging an arm 25 of the segment 2i. The spring 22 is tensioned to normally swing the segment 2| in a counterclockwise direction relative to its point of support on the stud I9.

The segment 2i extends back from its; point of support on the stud I9 to a point directly beyond the raised portion I8 on the steel bar II'and the upper surface of the segment 25 normally lies in the same plane as the upper surface of the raised portion IS. The wide end of the segment ZI is an arcuate band 26 which is disposed and slides beneath the heel of the cutter I5 and is located outside of the periphery of the code disc I when the code disc I is in position in the cutting device.

An arm 21 of the segment 2I has an upturned lug 28 equal in width to the width of the slot 3 in the code disc I. When the code disc I is first placed in the cutting device the lug 28 is positioned in the slot 3 to insure correct positioning of the segment 2i relative to the code disc I for the starting of the cutting operations. On the top face of the arcuate band 2'5 of the segment 2I are inscribed letters: and numerals 29 for indicating points of setting for the segment and code disc necessary to obtain a required cutting. The segment 2I is provided on its arm 25 with an up wardly projecting lug 30, which in the normal position of the parts engages between adjacent teeth 2 on the code disc I to move that member into the cutting position required to obtain the cutting indicated by the index 29 on the face of the segment 2 I. Secured to the lower face of the steel bar I! by means of the screws I6, I6 is a holding spring 3! provided on its free end with an ear or lug 32 having a suitably, beveled end; that engages between adjacent'teeth 2 on the. code disc I to hold the code disc I against undesired movement by the spring 22. The free end of the spring 3| carrying the lug 32 is permitted limited vertical movement by reason of a comparatively large aperture 33 and a comparatively small diameter stud 34. Movement of the free end of the spring SI to withdraw the lug 32 from engagement with the teeth 2 of the code disc I is brought about by manually pressing downwardly on a tab 35 which extends downwardly from the free end of the spring 3| and beneath the steel bar I'I. Since the free end of the spring 3I is capable of limited movement and the lug 32 is bent over on its end and is only just long enough to engage the teeth 2 of the disc I, the disc I may be manually rotated in a clockwise direction by applying sufficient force to the disc to displace the free end of the spring so that the lug 32 is moved downwardly from engagement with the teeth 2. The spring 3!, however, prevents accidental movement of the disc I. If in turning the disc I, however, the disc is moved beyond a desired point release of the lug 32 from engagement with the teeth to permit movement of the disc I in a counter-clockwise direction may be accomplished by manually pressing downwardly on the tab 35 as abovementioned.

The segment 2I is adapted to be moved downwardly as a whole slightly and to be tilted relative to its pivotal point of support by operation of the cutting device. For obtaining this movement when the jaws I2 and I3 of the cutting device are in their closedposition a downward-v 1y extending release member 36 is attached to the upper jaw I2 of the cutting device. l'he release member 36 has a slotted lower end 31 extending transversely about the edge of the ar cuate band 26 of the segment 2I in the form of a V jacent teeth 2 of the code disc I preparatory to the positioning of the code disc to a new position for cutting. When the jaws are returning to normal position the release member 36 presses upwardly against the lower surface of the arcuate band 26 of the segment 2! and lifts the lug thereon into engagement with the disc there- -by insuring return of the segment 2i to its normal plane. A combined guard and index point member 33 is provided on the outer end of the jaw I3 of the cutting device. The guard and index member 38 is L-shaped and has a front portion 39 extending downwardly above the upper face of the disc I to prevent raising of the outer portions or" the disc I when the cutter is being withdrawn or the disc is being rotated to a required position. This front portion also serves to hold the disc when the segment is reengaged therewith. A side portion ii? of the member 33 extends downwardly toward the arcuate band 25 of the segment 25 and serves as an index point for gauging the extent of rotation of the segment 2|.

To cut a disc I so that it may be used as a code disc in a repertory dialing device, a code disc I having its full complement of teeth 2 is placed in the cutting device by sliding the slotted portion 3 about the stud I9 and between the flanges 20, 20 until the bent portions 9, 9 of the spring 5 have passed the stud I9 and the stud I9 extends through the innermost portion of the slot 3. In doing this the lug 28 on the segment ZI must lie in the slot 3. The segment 2! is then manually rotated against the action of the spring 22 by grasping an upwardly turned lug ti and swinging the segment 2i about its point of support on the stud I9. In doing this the disc I is rotated by reason of the engagement of the lug 3D with the teeth 2 of the disc I. The disc I and the segment are rotated until the index figures on the arcuate band 2s and corresponding to the desired code setting come in line with the index point 30. The handles It and II are then manually pressed toward each other to move the cutter I5 against the teeth 2 and to shear ofi the teeth at the required point. When the handles are slightly released the segment 2i is automatically returned to normal position by means of the spring 22 since in a slightly released position the release member 36 is still sufficiently pressing the segment 2| downwardly to prevent engagement of the lug 33 with the teeth 2 of the disc 5. When the handles are fully released the lug Bil rises into engagement with the teeth 2 of the disc I. The disc 2 is held during the return movement of the segment 2I by the lug 32 on the free end of the spring 3i. By manually rotating the segment 2i again to another required position the disc is moved to another required position for cutting. In Fig. 3 the teeth 2 have been sheared at five required points and the segment 2i has returned to normal position.

It will be seen, therefore, that by simply moving, successively, the segment 2! to points where desired markings on the segment M are brought into line with the portion it of the index point 38 and by pressing the handles it and II toward each other to operate the cutter It as each point is reached a disc I may be cut to provide a code disc having teeth and spaces at predetermined points.

In the modification illustrated in Figs. 7, 8, 9 and 10 certain parts are identical with parts shown in the figures above described. These parts, therefore, are identified by the same numerals used in identifying them in the other figures. The modified form shows a perforated disc 42 which may be used in place of the disc I above described. A pin 43 is provided on the arm 25 of the segment 21 to take the place of the lug 30, the pin 33 being adapted to engage the perforations id in the disc 12 when the disc n is to be rotated. By moving the segment 2i and operating the cutting device, portions of the periphery of the disc 42 may be cut out to provide raised portions 45 and notches 45 as shown in Fig. 8. To take the place of the lug 32 on the spring 3! a pin All is provided as shown in Figs. 9 and 19. The pin l! engages the perforations Mi and prevents accidental movement of the disc 32. A slot 28 and a screw it permit limited movement of the end of the spring which corresponds to the spring 3| in Figs. 5 and 6.

In some cases discs are required with a comparatively large number of cuttings and it is found necessary to substitute teeth or perforations for the space taken by the radial slot at the point 3 in the disc during the cutting opera tion in order that the disc may be further rotated in the cutting device. To take care of such cases a filler-piece 5| as shown in Figs. 11 and 12 is provided for application to the cutting device. The filler-piece 5! is an arm pivotally supported on the stud I9 directly above the segment 2i. The filler-piece 5| is the same width as the slot 3 and is raised for the greater portion of its length to lie in the same plane as the disc I. The free end of the filler-piece 5| is apertured or is provided with teeth to correspond to the apertures or teeth in the code disc. In Fig. 11, teeth 52 are provided to correspond to the teeth 2 in the disc I. Spaced plates 53, 53 are secured to the filler-piece 52 by rivets 5d. The spaced plates are wider than the filler-piece 5i and are adapted to receive edge portions of the disc I adjacent the slot 3. A pin 55 extending upwardly from the segment 2! enters an aperture 56 in the filler-piece 5| and holds the filler-piece Si in a required position to fill the slot 3 when the disc I is applied to the cutting device. The filler-piece 5| rotates with the disc I during the cutting operations and the teeth 52 take the place of the teeth 2 in the space in which no teeth are provided on the disc. The disc I, therefore, may be rotated to the same extent as if teeth were provided all around its periphery instead of having a space with no teeth such as the slot 3. It is obvious, therefore, that by using the fillerpiece M on the cutting device additional cuts may be made in the disc I.

What is claimed is:

1. A device for cutting code discs which comprises a cutting blade, a rotatable disc engaging element for engaging and advancing the disc relative to said blade, means for actuating said blade to cause said disc to be cut and said disc engaging element to be disengaged from said disc.

2. A device for cutting code discs which comprises a cutting blade, a rotatable disc engaging element for engaging and advancing the disc relative to said blade, means for actuating said blade, and means controlled by the movement of said blade actuating means for restoring said disc engaging element to its normal position.

3. A device for cutting code discs which comprises a cutting blade, a rotatable disc engaging element for engaging and advancing the disc relative to said blade, means for actuating said blade, and means effective upon the actuation and release of said blade actuating means for restoring said disc engaging element to normal position.

4. A device for cutting code discs which comprises a cutting blade, means for operating said blade, a rotatable disc engaging element to engage and rotate a disc relative to said blade and automatic return means in engagement with said rotatable disc engaging element to return said disc engaging element to normal position.

5. A device for cutting code discs which comprises a cutting blade, means for operating said blade, a manually operated disc engaging element to engage and rotate a disc relative to said blade, automatic return means to return. said disc engaging element to normal position and holding means engaging said disc during return movement of said disc engaging element to prevent return of said disc to normal position.

said segment and a filler-piece rotatable with the disc and extending into the radial slot in the disc, said filler-piece providing means for rotating the disc beyond its normal extent of movement.

HOWARD BROADWELL.

Images