US2115529A - Master key for card punching controls - Google Patents

Description

April 26, 1938.

J. T. JQWETT MASTER KEY FOR CARD PUNCHING CONTROLS Filed July 9, 1937 INVENTOR- James ZiJawztZ By W TTORNEYS.

Patented Apr. 26, 1938 PATENT OFFHCIE MASTER KEY FOR CARD PUNCHING CONTROLS James T. Jowett, Philadelphia, Pa.

Application July 9, 1937, Serial No. 152,705

9 Claims.

This invention relates to card punching controls, and more particularly to those used in connection with Jacquard looms for weave and pattern production. I

More specifically, the present invention primarily aims to provide What will be hereinafter termed as a substitute master key, the same being of a type to coact with or over-reach a predetermined number of adjacent keys for the purfa pose of effecting group punching and successive repeats thereof; or for selectively actuating spacially related keys to either side of said master key.

Subsidiary objects and attendant advantages of the invention will be hereinafter specifically referred to, or become apparent from the following disclosure, considered in connection with the drawing, in which,

Fig. I is a plan view of a piano-machine head illustrating application thereto of two convenient embodiments of the master key of this invention.

Fig. II is a section on the plane designated IIII in the preceding illustration.

Fig. III is a broken perspective View of one form of the key adapted for group control of four adjacent punching plungers.

Fig. IV is a broken fragmentary View, with parts in section, of a modified form of the invention, showing how a selected key or keys within the limits of the master key head may be left undisturbed during use of said master key.

Fig. V is a detail showing how selected keys can be left in action or put-out of action by removal of a plug from the master key head;

and,

Fig. VI is a cross-section thereof.

Referring more in detail to the drawing, a conventional piano-machine head is generally designated by the reference t, the same having apertures 5 whereby it is attachable to the plunger of an appropriate punching mechanism; while B-l9 inclusive indicate the usual keys for normal control of the punching plungers 20-35, ex-

cept as hereinafter disclosed.

In accordance with the present improvements, master keys 36, 31 are for instance and respectively substituted for the customary keys that would otherwise control the punching plungers 25 and 30 for example, said master keys, being adapted to couple together one-and-two other keys Ill, ii, and 2 to each side thereof, or oneand-one other keys Hi, It, respectively, and by way of example only. Each master key 36 or 31 embodies a stem 38 with a head 39, said head being, preferably, of arcual longitudinal formation and disposed relative to said stem for point contact overone or more adjacent keys 6-H], and it is also cross-sectionally suitably-shaped for key-top engagement, as best appreciated from Figs. II, V, and VI. In other words, the master key head 39 is cross-sectionally troughed or spacedly concaved at Ml, FigscII and III, to prevent lateral or pivotal displacement when used for the group control of predeam termined punching-plungers Ell-35.

In the specific embodiments shown of the master keys 36, 31, the former controls the four punching-plungers 24-21, and the latter the punching-plungers ZQ-Bl, so that When the 15 respective master keys are individually depressed, the associated punohing-plungers will be simultaneously actuated without any inconvenience to the operator.

In the forms of the invention shown in Figs. IV-VI, inclusive, parts corresponding with or similar to those previously described are designated by like characters with a prime exponent, in order to obviate repetitive description. It is, however, to be noted that the master key 0 stem 38 has its upper end 4i reduced in diameter for forced fit, or otherwise, engagement in a suitable hole 42 provided for its reception in the key head 39; and that said head may be formed with one, or more, apertures 43 therethrough for free passage of the key ll when the master key 36 is depressed. Thus it will be readily seen that, as the key ll passes through the aperture 43, the associated punch 26 will not be operated, but missed; and the desired grip on the jacquard card obtained. In some instances, as best understood from Figs. V and VI, the aperture or apertures through the master key head 39, may be screw-threaded as shown at 44, and slightly counterbored at 45, for reception of con- 40 formative removable screw-plugs 46, it being understood the threaded borings 44 will be of a diameter for free passage of the associated key head. Still further, it is to be remarked that the screwplugs 46 are concaved at the inner end 45 41 for point contact with the key-heads; and

that by provision of the counterboring 45 the removable plugs 46 will be frictionally locked in place when used.

From the foregoing it will be obvious that the 50 master keys 3%, 31 or 36' may be made for joint actuation of any adjoining one or more adjacent keys 6-! 9 collectively or for repeats, or that any one or more proximate keys 6-! 9 may be missed. Still further, it is clearly apparent that master 55 keys 36, 3'! or 36, of the type disclosed may be employed for any selected group operation of keys 6-49; as well as substituted for any conventional key 6-l9 within the range of the piano-machine head, whereby the selective cutting of jacquard cards is rendered much more simple with attendant economy in time and labor, or subsequent correction.

Having thus described my invention, I claim:

1. A master key for card-punching machines adapted to operate adjacent keys simultaneously, said key embodying a stem for substitution in place of a Withdrawn conventional key, and a head on said stem engageable over flanking key heads to effect group punching and successive repeats thereof.

2. A master key for card-punching machines adapted to operate adjacent and relatively-spaced keys simultaneously, said key embodying a stem for insertion into the socket of a withdrawn conventional key, and a head on said stem with one or more apertures therethrough for respectively operating the adjacent and relatively-spaced keys respectively.

3. A master key for card-punching machines adapted to operate adjacent and relatively-spaced keys simultaneously, said key embodying a stem for insertion into the socket of a withdrawn con-- ventional key, a head on said stem with one or more apertures therethrough for respectively operating the adjacent and relatively-spaced keys respectively, and said aperture or apertures missing intervening keys.

4. A master key for radially-disposed card punching keys adapted to operate multiples thereof simultaneously, said key embodying a stem for insertion in the socket of a Withdrawn conventional key, and a head for concurrent tangential point contact with flanking key heads.

5. A master key for card-punching machines of the type disclosed and adapted to operate adjacent keys simultaneously, said key embodying a stem for substitution in place of a withdrawn conventional key, and a longitudinally arcual head extending to both sides of said stem for coaction with one or more flanking key heads.

6. A master key for jacquard card-punching machines, as defined in claim 5, wherein the arcual head is of a trough-like cross-section to prevent lateral movement with respect to the flanking keys actuated thereby.

7. A master key for jacquard card-punching machines, as defined in claim 5, wherein the arcual head differentially extends to each side of the stem for coaction with a single and multiple adjacently flanking keys respectively.

8. A master key for card-punching machines, as defined in claim 3, wherein the aperture through the key head is screw-threaded, and a removable plug is fitted into said aperture.

9. A master key for card-punching machines, as defined in claim 3, wherein the aperture through the key head is counter-bored and screwthreaded for reception of a complemental screwplug, and said plug has its inner end concaved for point contact with the conventional punching machine key-head.

JAMIES T. JOWETT.

Images