Патент USA US2087409код для вставки
JulyV 20, 1937. l J. F. KocA KEY LEVER ADJUSTING MECHANISM Original Filed March 2, 1933 à 2,087,409 ` 2 Sheets-Sheet l July 20, 1937. . ` J. F. KQCA ' KEY LEVER ADJUSTING MECHANISM Original Filed March 2, 1933 2,087,409 ` 2 Sheets-Sheet 2 ' ` Patented july 20, 1937 2,987,499 UNITED STATES 2,087,409 KEY LEVER ADJUSTING MECHANISM `laines F. Koca, Woodstocln‘llll., assigner to Wood stock Typewriter Company, Woodstock, Ell., a corporation of Illinois Original application March 2, 1933, Serial No. 659,335. Divided and this application June 25, 1934, Serial No. 732,200 6 Claims. (Cl. IS7-_22) This invention relates to typewriters in general, short. However, operators who are used to the and speciñcally to means for regulating type conventional type of machine where a long writer keys. stroke is used, find it inconvenient, if not awk This application is a division of applicant’s ward, to become familiar with the new stroke. copending application, Serial No. 659,335, filed Also, operators oi diiierent speed require a dif March 2, 1933. ' ferent key lever stroke. Therefore, if the stroke The primary object of the present invention is of the key levers can be adjusted, the operators to provide means of a novel character for regu can quickly acclimate themselves to using elec lating the stroke of the typewriter key. tric typewriters. Also, the depression of the Another object of the invention is to provide typewriter key lever can be adjusted to meet the l0 l0 novel means for regulating the movement or demands of various operators having various the length of stroke of the key levers of electrical strokes and speeds. ly operated typewriters. The means provided for changing or varying A still further object is to provide simple and the distance the key levers travel vertically upon l 5 eiiicient means to adjustably regulate the move the depression of a key lever key comprises a ment of the stroke of the key levers. longitudinal strip t3 made of any desirable ma Numerous other objects and advantages will be terial, but preferably sound deadening material, apparent throughout the progress of the following such as über. The strip i3 is provided with specification. diagonal slots Iii which engage pins l5 project The accompanying drawings illustrate a select ing forwardly from a Jflange it of an angle mem 20 ed embodiment of the invention and the views ber il. The strip i3 is positioned between the therein are as follows: flange it on the angle member ll and a flange Fig. 1 is a detail transverse sectional view of I8 on a supporting member I9 which is fixed to a, typewriter showing means for regulating the the main frame of the typewriter. The upper movement of the key levers. ilange 29 of the member il abuts the underside Fig. 2 is a detail elevation of some of the regu of a flange 2i of the member i9. Screws 22 pass lating mechanism shown in Fig. 1. through elongated slots 23 in the member ll and Fig. 3 is a detail plan section oi the members threadedly engage the threaded holes 2i! as indi shown in Fig. 2 on the line 3-3 of Fig. 1. cated at 25, Fig. 1. The member Il is adapted Fig. 4 is a detail perspective View of several for lateral slidable movement relative to the 30 of the parts shown in Figs. l to 3. member E9. The member Il is provided with a Fig. 5 is a View similar to Fig. 1 but showing turned ear 2t, Fig. 4 having a threaded opening a modification of the means for varying the 2l to receive the threaded end 28 of a thumb depression of the key lever stroke.' screw 29. The thumb screw 29 is revolubly mount Fig. 6 is. a detail plan section on the line t-S ed in the frame it as indicated at 39, Fig. 3, Pins of Fig. 5. Si project inwardly from the inner face of the Fig. '7 is a detail perspective View of several of flange i8 of the support i9 and act as a guide for the parts comprising the depression stroke regu the strip i3. Upon rotation of the thumb screw lating means which are shown in Figs. 5 and 6. 29, the angle member il can be moved to- the „ne particular typewriter herein shown by right or left, and due to the pin and slot con 40 way of illustration is a “Woodstock” typewriter nection between the strip I3 and the member and comprises a frame lil upon which key levers i l, the strip i3 will be caused to raise or lower de ll are arranged in the usual manner. The key pending upon the direction the screw 29 is ro levers l l have theirrear ends operatively supported tated. The key levers Il which rest upon the by a transverse rod (not shown) which is re usual bottom rest, will then be located in vertical movably supported in the sub-frame of the type movement between the bottom rest and the bot writer. Type bar actuators are controlled by the tom edge 32 of the strip i3. As the bottom rest is key levers II and operate the type bars l2 ñxed, the key levers ll will be limited in their through the intermediary of sub-levers (not vertical movement or travel by raising or lowering shown). the strip i3, it being understood, of course, that In electric typewriters, that is, in typewriters the key levers H are normally spring-urged an’d having type bars which are electrically actuated, as this spring-urging construction is well known the depression of the key lever to cause the rotat in the art, no description thereof will be made ing drive shaft to operate the type bars upon de herein. In accordance with the construction just pression of a key lever, is relatively small or described, the operator or typist, by merely op 2 2,087,409 erating a thumb screw 29, may thus regulate or adjust the vertical movement of the type lever to suit his or her individual desire. Y Y In Figs. 5 to 7 inclusive there is shown a ¿modified arrangementrof the parts for perform ing a similar operation. In these figuresy 40 designates a strip- of sound deadening material, such as fiber. Pins 4l project from the strip 46 and are adapted to engage diagonal slots 42 10 formed in an intermediate Vmember 43 and ver ward movement of the levers, an upper rigid member above the levers, a sound deadening strip carried by the rigid member, means for shift ing the rigid member laterally, and means asso ciated with the rigid member and the strip for moving Vthe strip vertically during lateral move ment of the rigid member. 2. In a typewriter having a frame, pivotally mounted key levers having vertical movement, a supporting rest'for the levers to limit the down tical slots 44 formed in the front Vflange 45 of Y ward movement of the levers, an upper rigid a supporting member 46. The member 43 and the strip 40 are arranged between the front flange 45 and the rear ilange 4i of the support ing member 46. The supporting member 46 is ñxed to the flange l0 while the member 43'L is adapted to have free lateral slidable movement member above the levers, a sound .deadening strip carried by the rigid member, a revolubly mounted relative to the supporting member. horizontal movement of the rigid member, . 'I‘he member 43 is provided with an inturned end 48 which is adapted to receive the threaded end 49 of a thumbscrew 50. The thumb screw 50 has free revoluble movement relative to the frame I0 and is provided with a thumb piece 5I ber and strip to move the strip vertically during 3. In a typewriter having pivotally mounted key levers and a bottom rest for said key levers, 20 a longitudinal bar above said key levers having its underside forming a stop for engagement . i with said key levers to vlimit the vertical move moved laterally and due to the slot and pin con nection between the member 43 and the strip 49, the strip 4U will be forced to travel or be moved vertically, the slots 44 acting as guides for the stop vertically. . ’Y fastened together in any suitable. manner, such Y means engageable with said stop for moving said ' , y 4. In a typewriter having pivotally mounted key levers and a bottom rest> for said key levers, a> longitudinal bar above said key levers having its underside forming a stop for engagement with i said key levers to limit the vertical movement of said key levers, _laterally slidable means en as by the screws 52. gageable with said stop for moving said stopV clusive, it can be readily seen that vertical move vertically, and a thumb nut for shifting said means laterally. From the construction just described and clearly shown’ in Figs. 5 to 'I in ment of the key levers ll‘is restricted. The invention provides improved eflicient means of relatively simple construction for posi tively varying or regulating the vertical move ment or the Idepression of theY key levers, there 40 V'fore permitting the operator or typist to adjust or regulate the stroke the desirable or preferred amount. Changes may be made in the form, construc tion, and arrangement ofthe parts without de parting from the spirit of the invention or sacri rlcing any of the advantages thereof, and the right is'hereby reserved to make all such changes as fairly fall within the scope of the following 50 a slot and pin connection between the rigid mem ment >of said key levers, and laterally v slidable ~ . The two parts, including the member 45, are . for moving the rigid member horizontally and for rotating the screw. During rotative move .ment of the screw 50, the member 43 will be strip 40. ' member threadedly engaging the rigid member claims. ' The invention is hereby claimed as follows: 1. In a typewriter having a frame, pivotally 5. A typewriter having a frame, key levers for said typewriter, spaced upper and lower stop _ele ments above and below respectively of the key levers to limit the vertical movement of the key levers, a member adapted to be moved laterally 40 and operatively connected to said upper stop ele ment, and rotative means for moving said last named member laterally, Vlateral movement of said last named member causing vertical move ment of the upper stopelement. 6..In a typewriter having pivotally mounted` keylevers, an elongated bar engageable with the key levers for limiting the movement thereof, means including a plurality of pin and slot con- . ` nections for bodily displacing said bar to uni 50 formly vary the position of the bar with respect to the key levers, and a single control member ' mounted key levers having vertical movement, a for controlling said means. Y supporting rest for the levers to limit ythe down- ' JAMES F. KOCA.