US1037399A

US1037399A - Locking device for type-writing machines.

Info

Publication number: US1037399A
Application number: US65076011A
Authority: US
Inventors: Henry Herbert Yelf
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-09-22
Filing date: 1911-09-22
Publication date: 1912-09-03
Anticipated expiration: 1929-09-03

Description

H. H. YELP. LOOKING DEVICE FOR TYPE WRITING MACHINES. Arruonxox nun saw. 22. m1.

' 1,037,399, Patented Sept. 3, 1912.

F 1, v sauna-sum 1.

II-IA W as. 'Alim. D- Cn H. H. YELF. Lommm 1mm ron TYPE wnrrmo momma. APPLXOATIOI PILSD IBPT. 22, 1011.

1,037,399. Patented Sept. 3,1912.

ll-IA mummvunmni.

EENRIHER EBT rnnirpor soozrnsna, ENGLAND.

-LOOKING DEVICE FOB'TYPE-WRITING MACHII VES.

Specification 0! Letter: I'atent.

Patented Sept. 3, 1912.

Application filed September 22, 1911. Serial No. 650,760.

To all whom it may concern This invention relates to improvements in' and relating to accessory'devices for type-' writing machines and has for its object provide a device adapted to be locked 1n the typewriting machme and in its locked positlon to prevent the type bars from being 0 erated, so that only persons in ossession oi a key capable of unlocking the evice, are able to have access to the machine for writin purposes.

n the specification acc0mpa nyin% my previous app ication of the United tates of America Serial Number 572585 filed July 18th 1910 there is described a pan or receptacle adapted to be inserted into the typewriting machine so as to partly lie under the platen and to receive the debris arising from erasing o erations performed against the platen. or front-strike t ewriters the receptacle was conveniently given the shape of the cavity in a front-strike typewriting machine, which cavity as is well known is curved or part cylindrical. Now if such a receptacle e locked in the cavity aforesaid it is clear that the type bars will not be able to rise in order to strike an impression upon the paper on the platen.

In particular, therefore, the present improvements may be said to consist in roviding the receptacle aforesaid with a ock for securing it 1n the typewriting machine, but there isa larger scope com need by the present improvements, inasmuc as the partcylindrical or other shaped object which,.according to these improvements, is fitted with a lock for enablin the object tobelocked to the frami .of t e machine in the before mentioned are ation to the typebars, may

take the form ofadebris receptacle asafore said, or 01a container for eraser pencihand' tools and so on, such'conta1ner aving; say, a lid or cover:provided'iiwith aisuitable lock; or fastening, or of an oilcontaiihetbrjcam; or. the, device mi ht have -no areceptive ca pacitybut'might a mere'dumm vada' ted to bear advertising'matterrand 'a apte .ifOI' lockin'glthe machine and-for nothing'else; "1:; In' order to enable this' inventi'on to be readily understood reference is made to the accompanying drawings in which- Figure 1 is a central vertical section from front to rear of one exam le of the improved locking device as applied to a typewriting machine only sufiicient parts of the latter being shown to enable the application of the device to be appreciated. Fig. 2 is a transverse section of the locking device removed and as seen when looking toward the rear, the lock being in the operative position. Fi 3 is a similar view but showing the loc in the inoperative position. Fig. 4. is a view similar to Fig. 1 but showing the lock in the ino erative position. Fig. 5 is a plan of a suita le key for use with this device. Fig. 6 is a view similar to Fig. 1 showing a modified form of locking dev1ce as applied to a; different construction of typewriting machine. Fig. 7 is a side elevation of the key removed. Fig. 8 is a front elevation of the locking device removed. Fig. 9 is a view similar to Fig. 6 but showing the lock in the inoperative position. Fig. 10 is partly a rear. elevation and partly a transverse section of a further modified form of locking device and .11 is a plan and Fig. 12 a central vertica section rom front to rear of the same.

According to the examples illustrated by the drawings the device is adapted to be used as a dust and debris receptacle.

In Figs. 1 to 4 the receptacle 1; has an open on b, or an end flange which takes beneath a curved or other art a of the framing beneath the platen when the receptacle is placed upon or over the type bars e and is moved into its receptive position in which it is seen in Figs. 1 and 4. According to this arrangementa rod f is revolubly mounted in In em brackets g fixed.on the underside o the rece tacle a and one end maybe formed or fitte with a catch vl2. or device adapted, whenthe rod f lS-;tlll'll8d, to engage behind thesaid frammg member'c. At its'opposite end the'rod foarrxes a cam 7' or the li e and'a springla, which 'may encircle the' rod f, acts uponthc latter so as to alwa s tend to maintain the .cam 7' inthe path 0 a key I and the catch 72,

in the. operative-'Lpositionas seen: in- Fig. 1. A blockm' or' k'ey. guide formed with 'a suitableikey slot vor-a erture n is fitted in such a position that w en the correspondingly "shaped 'ke l-is insertedin the key-way n as shown in ig. 4, the cam j is pushed around in one direction against the action of the spring is and the catch it is turned to ino crative position. As shown in Fig. 5, tie edge of the key has a suitable stepped or cam formation in order to enable the cam to be moved aside by merel forcing the key 1 into the key-way n. en the key 2 is withdrawn, the catch it is moved by the spring is to the operative position seen in Fig. 1. The whole of the parts of the lock may be inclosed in a suitable housing ;0 fixed on the underside of the receptacle a. Therefore it will now be understood that if the receptacle (1 or other object having the key Z inserted, be placed in position over the type bars e in the typewriting machine and the key 6 be then removed, the spring It will throw up the catch it behind the adjacent framing member a and only a person possessing a properly shaped key will be able to release the catch it and remove the receptacle or object a to enable the machine to be used for writing. As seen in these figures the receptacle a is fitted with a rubber shoe or guard g on the edge of an extension 7 of the front wall, which extension reaches below the body of the receptacle a. The front wall which rests upon the type bars 6 is thus prevented from scratching or injuring the enamel or the like on the type bars e. The interior of the receptacle is fitted with an upstanding flange s which fits against the front surface of the framing member 0 and prevents the receptacle from being inserted too far into the machine.

In another example illustrated by Figs. 6 to 9, a bar, rod or arm it having a catch u which may be downwardly directed is so disposed that the catch u is adapted for engaging behind the inking pad support '2: of a certain make of machine. The rod or arm a is pivotally mounted in a bracket 10 fixed in a suitable housing 0:, which may actually be within the receptacle 0 or other object so that the latter possesses no exterior projection as is the case when the housing is exteriorly arranged as in Fi 1 to 5. A blade or other spring 3 may e arranged to constantly tend, to depress the arm at to move its catch it into operative position so that'in'this arrangement, as in the'foregoing, the key Z must be in position when the receptacle or object a is ut into the machine and then u on with rawing the key-Z'the spring 3 wil depressthe arm and catch into the osition iseen in Fig. 6 and thede vice will e locked in position in the -typewriting machine'iand wlll prevent the -h type '.-bars. from being thrown; upward :as 50-.will new:be:welliunderstoodity The'ke "Z in this arrangement mayibe ofinverted? fsec-' tiona'sshown and be'formedwith 'a suitably inclinedfi'end zfor lifting'the' mma.

flhigconstruction ashown gi "Figs 1Q 85151 i 5 is; yeryersimilars to 'that showrr'r'in- Figs. e -to;

'- somewhat:

9, but in this arrangement the arm or bar 1 is bifurcated at 1 and the inturned ends 2 are inserted through holes in a sheet metal bracket 3 to form a pivotal connection. AL bow spring 4 is preferably connected at one end to the arm it while the other end takes beneath the bracket 3 the spring 4 constantly tending to depress the arm t and catch 14. Between the bifurcated parts 1 there is a downwardly bent portion 5 on the bar which reaches into the path of the key Z. The inner end of the key Z, when nearly ressed home, comes over a bent saring Blade 6 which as the key is pressed home raises the inner end of the key thereby completely raising the arm at and catch it. In any of the constructions shown, and as seen in Figs. 1, 4, 1O, 11 and 12, the rece tacle a may be fitted interiorlv with clips 7 or supporting erasers or other appliances or in struments used in connection with typewrit ing. In the constructions shown in Figs. 6 to 12 the receptacles are formed or fitted with wide side flanges 8 which may assist in supporting the receptacle by taking over and restin upon the upper surface of the frame of t e machine.

It is obvious that, while locks of the kind described are advantageous, the invention is not particularly concerned with special con- 95 structions of look as these may be of widely differing types. The essence of the invention is the rovision of an obi'ect which is capable of eing locked in re ation to the type bars of a typewriting machine so that 100 t e latter is inoperative when the object is in position and can only be used by persons possessing a key enabling them to release and remove the object as aforesaid, said object being preferably in the form of a re- 5 ceptacle that will serve as a debris collector .as'well as a tool holder.

What I claim is 1. A locking device for a typewriting machine comprising an object applicable to said machine in such a position as to render the type bars thereof inoperative, a lock on said 0 ject adapted to be engaged with a suitable part of such machine and to fasten said object in said position, and a cushionmg shoe carried by the object for engaging the type bars.

- A locking device for a typewriting machine comprising an object adapted to be inserted into a cavity or space in said ma- 'chine' within range of the t e bars, a housmg earried by the object, ail ll a lock in said ousmg adapted'to be engaged with a suitable part ofsaid machine and to fasten said object in 'said cavit A locking device for a typewriting machine. fo'omprising an object conforming with and insertible into a space 1n saxdmachine, said space being on one slde by the type bars, a base 130 or cavit boundet? housing carried by the object, and a lock in said housing adapted to be enga ed with a suitable part of said machine an to fasten said ob'ect in said space or cavity.

4. A coking device for a typewriting machine coniprising a receptacle'insertible into a space or cavity in saidmachine, supporting flanges on said receptacle adapted to engo s said machine, and a lock on said rece tac e adapted to be enga ed with a suitab e part of said machine MIC to fasten said re- I ceptacle in said space or cavity.

5. A locking device for a typewritin machine comprising an object applicab e to said machine in such a position as to renderthe type bars thereof inoperative, a housing carrie by the object, a lock in said housing adapted to be enga ed with a suitable part of such machine an to fasten said object in said osition, means in said housing constant y tending-to render said lock operative and a key adapted when inserted to hold said lock inoperative. I

6. A locking device for a typewriting inachine comprising an object applicable to said machine in such a osition as to render the type bars thereof inoperative, a catch on said object adapted to enga e a part of said machine and to retain sai ob]ect in' said position, a spring constantly tending to force said catch into operative position and a key adapted to engage said catch and t holdthe latter in the inoperative position.

7 "A locking device for a typewriting machine comprising an object insertible into a cavity bounded on one side by the type bars,

supporting means thereon adapted to engage sai bars, locking means on said ob ect ada ted to be engaged with a suitable part of t e machine to retain said object in said cavit and tool holding means carried by the o ject.

8. A locking device for a typewriting machine comprising an ob'ect insertible into a cavity in said machine ounded on one side by the type bars, locking mechanism on said 0 ject comprising a movable catch adapted to be engaged with a suitable part of said machine, means constantly tending to move said catch to oplerative position and a sliding key adapte when inserted into the lock to operate said mechanism for moving said catc to inoperative position substantially as set forth.

9. A locking device for a typewriting machine comprismg a hollow rece tacle shaped to fit within the space bounde on one side by the type bars of said machine, a housing on said receptacle, locking mechanism within the housing, a catch under the influence of said mechanism and adapted to be engaged thereby with a suitab e part of said machine and a key insertible through a key hole and adapted to enter said housing in order to operate said mechanism for the removal of said.catch from operative position and for holding said catch inoperative substantially as set forth.

HENRY HERBERT YELF. Witnesses:

CHARLES PAGE, A. A. DYER.

Copies of this patent may be obtained for in out: each, by addressing the "Oommluloner or Iatents, Washington, 1Q."