US1331689A - Key-lever - Google Patents

Description

c. w. BARNABY.

KEY LEVER.

APPLICATION FILED JAN-29.1919.

Patented Feb. 24,1920.

IN VEN TOR.

4 UNITED STATE PATENT; OFFICE.

cm nnns w. IBALRNABY, or NEW YORK, N. Y.

KEY-LEVER.

Original application filed October 28, 1916, Serial No. 128,248. Divided and this n 29, 1919. Serial No. 273,865.

' To all whom it may concern:

Be it known that I, .CHARLEs W. BARN- A Y, a citizen of the United States, and a' resident of the borough of Richmond, county of Richmond, city and State of New York, have invented certain new and useful Improvements in Key-Levers, ofwhich the following is a specification.

My invention relates tojthe operating:

mechanism of typewriting machines. and the like and the objects of my invention are to provide a key lever of simple, cheap and-sue perior form. The present application constitutes a divisional'application of'mycopending application, Serial No. 128,248,"filed October 28,1916. T a

Figure 1 is a plan view of a key lever blank out from a metal sheet. I

' Fig. 2 is a perspective'view of the key en of Fig. 1 after being shaped to receive a key-- rlm.

Fig. 3 shows another application of my invention to the key blank.

Fig. 4 is a perspective view of Fig. 3 after views of the pivot portion of the lever Fig. 1. Y

Figs. 12 and 13 are top and side views of the pivot portion of the lever Fig. 1 wherein the two pivot lobes are bent along different lines from those which resulted in the relation of the pivot lobes, in Figs. 9, 10 and 11.

Fig. 14 shows approximately the lines upon which the lobes of the blank arebent to give the position to the lobes shown in Figs. 12 and 13.

In the formation of a lever with integral key flange by means of cutting a blank from a sheet of metal as illustrated in Fig. 1 and where it is desirable tohave the key flange 2- 4-4 approximately centered on the key stem 3, the slots 77 cut in the blank to carry the stem 3 to the center 1 of the circular flange. represented by 2 and the dotted Specification of Letters latent. Patnte;d Feb -24, application filed J' the blankis bent on the line 1140 th-YOW the plane of-key flange 2;4:-4-to a position at right angles with respect:t0 the pl ne Of the stem 3,. a considerable portionof the keyrim and pad is left unsupported. In the application of my invention I elongate one or more of the-key flange lobes, as at 56., and

afterthe key flan e is bent to its right angle position I bend t e elongated lobe or lobes,

to a position to close the gap in, and complete the periphery of the key flange, as

illustrated in Fig. 2.

Fig. 3 illustrates an application of my invention in which a single elongated lobe is provided at one side of and approximately parallelwith the stem 3. Thisv lobe maybe provided for by a continuation of. the stem in approximately a straight line,as shown by the dotted lines .6", or may be otherwise located with respect to stem 3. Fig. 4 shows.v

the key flange resulting from bending blank Fig. 3 on the line 8 to bring plane 2 at right angles to stem 3 and bending the lobe 6 to complete the periphery of the key flange. It is desirable to provide a bracket 9 on the blank upon which the endof the lobe may restwhen bent into position.

Fig. 5 illustrates another application of my invention in which the key end of the blank is slotted to divide the main portion of the key flange into two portions 2 and 2.

"2 is given a right angle bend forward and 2 a right angle bend backward along the dotted line. The lobes 5 and 6 are bent to complete the contour of the flange which results in the formation of the key flange shownin Fig. 6. 1

Fig. 7 illustrates an application of my invention in case a double stem is desired. It also illustrates how, where two lobes are employed, one may be elongated, as at 5, and

the other, 6, normally shaped; or how both lobes, as 5 and 6, may be elongated. Each stem 3 and 3 is given a right angle bend downward leaving the plane of the flange 22 undisturbed. Lobe 5 is then bent to meet lobe 6 and lobes 5 and 6" are bent to the line 12 and upward on the line 11, and

then bending lobe 10 forward on the line 12 and upward on the line 11, the two side by side lobes 1010 are thrown into spaced,

face to face relation with the axes of pivot bearings l5 coinciding with a common center line perpendicular to the plane of the body of thelever, as illustrated in Figs. 9, 10. and 11..

Referring to Fig. 14: by bending lobe 10 forward and lobe 10' backward and upward 'on the lines 13, 12, 13 and 12, respectively,

the two lobes are thrown into spaced, face to face relation with'the axes of their pivot bearings coinciding with a common center line which lies at an angle of approximately 45 with respect to the plane of the body of the lever, as illustrated at 14-14 Fig. 12, and shown in side view Fig. 13. Thus,

through my invention, by the formation and location of lobes in the plane of a sheet blank and bending same on certain lines, I. am enabled to providea lever with spaced pivot bearings whose coinciding axes lie at any desired angle with respect to the plane of the body of the lever from 90 to 45 or less broken periphery.

This invention is also disclosed, Lil]. a measure in my copending applications, Serial Nos. 112,951, typewriters, filed Au st 3rd, 1916, and 169,676, 'escapement, led May 19th, 1917.

and a key flange of practically un- 'Iclaim 1. A key bar cut from sheet metal, a keyfiange portion on said bar adapted to be bent tea plane transverse to the plane of said bar, and an arm proiecting from said keyflange portion adapted to be bent to bridge the gap left in said key-flange by thebar portion ofsaid key bar.

2. A key bar cut .from sheet' metal and including a body portion and a flange portion, said flange portion being adapted to be bent to a plane. transverse to Sflld body? portion and to be bent to bridge the gap left in said flange portion by said body.

said blank, said lobes being adapted to be bent on different predetermined lines to provide tWo axially spaced pivot bearings so positioned as to place the axis of said bearings at any predetermined onelof the various possible angles with respect toflthe plane of said lever blank.

- 'CHARLES W. BARNABY.

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