US818569A

US818569A - Type-writing machine.

Info

Publication number: US818569A
Application number: US106693A
Authority: US
Inventors: Arthur W Smith
Original assignee: YOST WRITING MACHINE CO
Current assignee: YOST WRITING MACHINE CO
Priority date: 1901-12-11
Filing date: 1902-05-10
Publication date: 1906-04-24
Anticipated expiration: 1923-04-24

Description

No. 818,569. PATENTED APR. 24, 1906. A. W. SMITH.

TYPE WRITING MACHINE.

APPLIOATION FILED MAY 10, 1902.

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HIE AT TURNS! PATENT ARTHUR W. SMlTH, OF JFi-RSEY ClTY, NEW JERSEY, ASSIGHQR TG T5651 WRITING MACHINE COMPANY, OF ILION, NEW YORK, A GOBPGMA Tron or rurw rosin Specification of Letters Patent.

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Patented A. ril 534: 1956.

Original application filed December 11, 1901, Serial No. 85,451. Divided and this: application filed May 10,1902. Serial llo. 1 96.693.

To all whom it may concern:

Be it known that l, ARTHUR W. SMITH, a citizen of the United States, and a resident of Jersey City, in the county of Hudson and State or New Jersey, have invented certain new and useful Improvements in Type-Writing Machines, of which the following 1s aspecification. i 7

My present application is adivisioh oi my;

. and detached from their stems or carriers and wherein there is little liabilit of the keyhead being accidentally turns displaced,

v or detached in use.

A further object of my invention is to provide a simple, cheap, and cfiicient key-head structure wherein a smooth and resilient.

touch is aiiorded and a strong and reliable 2 5 head is prov idcd and one in which there is no liability of the characters on the head being worn or rubbed off.

To the above and other ends which will hereinafter appear my invention consists in 0 the construction, arran ement, and combination of parts to be hereinafter described and claimed.

In the accompan ing drawings, which illustrate one form of ey head and stem em bodying my invention, Figure 1 is a detail side View of the key stem and head. Fig. 2 is afront view of the same, partly in section, this view being taken at right angles to the positions indicated in Fig. 1. Fig. 3 is a perspective View of the stem with the head detached. Fig. 4 is a dsta to View of the bottom cup of the key-head. ig. 5 is a des tailfbottom View of the key-head entire. Fig. 6 is a top view-of the same with parts .5 broken away.

In the accompanying drawings like refer-- ence characters indicate corresponding parts in the various views. v Each'of the lates '1 of the key-stem is preferably made of sprin metal and is resilicnt at its upper and, the p ates con-acct edhyrivets l and they incd spaced aparthywashsrs i is bent laterally at 2, so as to provide an out wardly-sxtending lug or clip section. The said lugs are passed through an angular opening 3 in the base of the key-head i and form an interlocking connection therewith, as shown in Fig. 2. From an inspection of Figs. 3 and 5 it will be observed that the angular lugs 40 on the key-stem are of less ore than the plates 1, so as to provide hearing-- shoulders 5 on the plates against which the head is ada ted to rest and on which it is supported. T c upper free cnds of the connect-- 5 ed plates 1 have a normal spring tension from each other, and in order to attach the head to its stem it is merely necessary to com press the upper ends of the spring plates i and slip the head over the lugs 2 by inserting 1. them within; the opening 3 in the base, shown in Fig. 2. The pressure on the plat-cs may then be removed, thereby permitting resiliency of the plates to bring about an 111-- terlocldng of the lugs 2 with the head to unite the key stem and head. By this ocnstruction the attachment and detachment of'the key buttons or heads may be readily and quickl effected, and when the parts are connested together it is impossible for ahead to become accidentally detached or lostor even to turn axially or to become displaced on its stem, and thereby throw the character in or on the head out of 'alinement with adjacent characters. Each key-head l is preferably fOP'l two oppositely -disposed metallic cup sections 6 and 7, fitting one within the ct and the former constituting the head and latter the bottom of the. key-head. cup-like section 6 is concsved, as inmost .1 at 8,'and is first covered with a'fahric 9, so. 11' as paper, on which is printed the letter or other type indicating character 10. The paper is then covered with a layer or of o transparent celluloid 1.1, which acts as prctectivc covering for the printed charac and enables the keys to be cleaned will without liability of spoiling the character. a

. The variousparts of the hey-head may he so secured together by turning. in the edges 12 of the paper and. celluloid coveringwitlnn the invrtsd top cap 6 and then inserting the bottom cup so that the turneddn portion 12 will lie between the walls or sides or c two cup. The parts thus assemhied void of. rims or ridges is presented to the touch of the operator and that none of the preferably submitted to the action of dies, which squeeze orcompress the sides and thereby secure tli paper and celluloid to the head and firmly nite the two cup-like sections together. The finishing dies preferably cause the side wall or flange oi the outer cup to taper downwardly and inwardly, so as to effect a' more tenacious and permanent union of the parts. I

From an ins ection of Fig. 2 it will be understood that y reason of the concavity in the top of the head the tightly-stretched coverings bridge the head and contact therewith on its upper side onl at the rim or perimeter,"

thus providing the esideratum of a resilient or cushioned key-head for the finger to strike.

Frorirthe foregoing description it will likewise .be'understood that the celluloid covers the entire top and sides of the hollow keyhead and that a smooth seamless surface-demetallic parts are exposed for contact with the fingers. Furthermore, it will be seen that there are no joints presented at the sides or top of the key-head and that a cheap, dusrable, smooth, and resilient key-head is provided which can be readily connected'to or disconnected from the key-stem, key-lever, or other part which carries it.

It will be perceived that the lugs 2 constitute, in efiect, spring-actuated latches and that these latches positively lock the head in osition on the stem, so that it cannot be pulled off without first bending the springplates 1 together.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, isv 1. In a type-writing machine, the combination of a hollow key-head having an open ing in the base thereof, and a key-stem comprising resilient members having engaging means that'are adapted to be removabl serted in the said opening in the key-ii and to engage the key-head and the walls of said opening to (positively lock the key-head to. the stem an to prevent the head from turning on the stem.

.2. In a t e-writing machine, the combination of a ollow key-head having an opening in the base thereof, and a key-stem comprisin resilient members having bearingshoul ers against which the base of the head bears to support the head in place and having enga ing means that-are adapted to be removab yinserted in the'said o ening in the key-head and to engage the keyead and the walls of said opening to positively lock the key-head to the stem and to prevent the head from turning on the stem.

3. In a t e-wntmg machine, the combi "p nation of a ollow removable key-head, having an opening formedtherein and akey-stem comprismg a pair of independent resilient head, resilient supports havin plates secured together, each having an outwardly-projecting lug, which lugs project into the opening in the head and engage and positively interlock therein to secure the ead to the key-stem and positively prevent the head from turning on the stem, said lugs being maintained in en agement by the resiliency of the plates an affording a removal of the head b a movement of said plates to- Ward each ot er.

4. In a type-writing machine, the combi-- nation of a removable hollow key-head, a rigid engaging portion forming part of said lateral clip members, which positively inter ock with the engaging portion of the key-head and positively prevent it from turning thereon and which enable the head. to .be removed.

5. In a type-writing machine, the combination of a removablehollow key-head having an engaging member formed as apart thereof, and a key-stem comprising separate suitably-united resilient plates, each having a projecting lug that is adapted to enter the hollow key-head and engage the engaging member ol said head and to be inaintained in positive engagement by the resiliency of the lates so as to positively prevent t e keyead from turning on the stem and to afford the remova l of the headby a'relative movement of said plates.

6. In at pe-writing machine, the combination of a ollow key-head having an an lar engaging opening in the base thereo a key-stem to which said he'adis removably connected, said stem comprising resilientlng means on said plates that coplates, enga the walls of the angular 0 enoperate wit IOO ing in' the base of the'key-head and w 'ch 2 positively lock the head to the stem.

7. The combination of a key-head for typewriting machines, comprising a two -'part' metallic body portion, t e .upper section of which is concaved, and a resilient cover which extends over the concaved portion and over the entire upper surface and edges of the head and is secured in place between, the two metallic parts that constitute the body of the I head, and a key-stem to which said head is detachably secured.

8. The combination of Writing machines, comprising two opposi disposed metallic cup-like ,sectionsgthe uppermost section being conca'ved on top, a paper disk having a type character thereon and a celluloid cover, the disk andthe eover being arranged to bridge said concavity and being secured'in place between said metallicicuplike sections, and a key-stemv to which said head is detachably secured.

9. The combination, of a rising two metallic'cup-like sections, one of which is entirely covered with a sheet of celluloid, so as to present a key-head having a seamless coveringof celluloid at its top and akey liead fort et el key-head comsides which celluloid sheet is secured between the two metallic sections and held in place by the pressure which unites the said sections, and a key-stem to which said head is detachably secured.

10. The combination of a key-head comprising two oppositely-dis osed metallic cuplike sections, the top one 0 which is concaved and is entirely covered with a sheet of celluloid so as to present a key-head having a seamless coverin of celluloid at its top and sides, which cell uloid sheet is secured be tween the two metallic sections and held in place by the pressure which unites the said sections, so that the celluloid is stretched across the concaved portion of the head to form a resilient contact portion for the finger and a fabric having a character thereon located beneath said celluloid sheet, and a keystem to which said head is detachably secured.

11. In a type-writing machine, the combination of a hollow key-head comprising a two-part metallic body ortion, the upper part or section of which is concaved, and a resilient covering which extends over the concaved portion and over the entire surface and edges of the head and is secured between the two metallic parts that constitute the body of the head, said head having an opening in the base thereof, and a key-stem comprising resilient members having engaging means that are adapted to be inserted in the said opening in the key-head and positively engage the key-head and the Walls ofsaid opening, to removably secure the key-head to the stem and to prevent the head from turning on the stem.

12; In a type-writing machine, the combination of a hollow key-head comprising two oppositely-disposed metallic cup -.like sectrons, the uppermost section being concaved on top, a paper disk having a type character thereon and a celluloid cover, the disk and the'coverbeing arranged to bridge said concavity andbeing secured in place between said metallic cup-like sections, said key-head having an opening in the base thereof and a key-stern comprismg'resilient members havprising two cup-like sheet-metal parts, and a 1 key-sten1 to which said key-head is directly and detachably secured.

14. The combination of a hollow key-head comprising two oppositely-disposed cup-like sheet-metal parts secured together; and a key-stem to which said key-head is directly and detachably secured.

15. The combination of'aJ-key-head com prising two oppositelydisposed sheet-metal cup-like parts secured together; an opening in the lower one of said parts; and a keystem having a resilient portion sprung into said opening whereby said key-head is detachably secured to said sten1.']

16. The combination cf a key-sten and a key-head detachably sec tired to said stem, said key-head being p0; 'Jively and locked in position on sai stem. i

17. The combinatior of a key-headv comprising a sheet-metal r art; and a key-stein, a portion of which detachably interlocks with said sheet-metal part to positively lock said key-head in position on said stem.

18. The combination of a key-stern having directly a spring portion, and a key-head having a part which detachably interlocks with said spring p'ortion to positively lock said keyhead in position on said stem.

19.The combination of a key-stem and a key-head detachably mounted on said stern, said head being positivelylockedin position ilirelcltly on said stern by a spring-actuated ate Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York, this 8th day of May, A. D. 1902.

ARTHUR VV'. SMITH Witnesses:

K. V. DONOVAN, E. M. WELLS.-