US2418043A - Typewriting machine frame - Google Patents

Description

March 1947- L. c. MYERS TYPEWRITING MACHINE FRAME INVENTOR Lewis (Z fly 5.5: Wu ww W 2 Sheets-Sheet l Filed June 2, 1944 lllll.

lllll I l l l ||I|Ill. I I l I l l ll l l I I I I 1| l Myers 7 W %-f ATTOI NEY5 March 25, 1947.

L c. MYERS TYPEWRITING MACHINE FRAME Filed June 2, 1944 2 Sheets-Sheet 2 W ATTORNEYS v INVETOR Lewis (Differs BY" K km M 7 Patented Mar. 25, 1947 UNITED STATES PATENT OFFICE TYPEWRITING MACHINE FRAME Lewis G. Myers, Freeport, N, Y., assignor to Royal Typewriter Compa y, Inc, New York, N. Y., a

corporation of New York Application June 2, 1944, Serial No. 538,448

Claims. (01. 197-186) This invention relates to typewriting or like machines and more particularly to masks or covers for such machines equipped with closures or pancls adapted to be displaced or moved from open ings in the mask or frame walls for rendering mechanism mounted within the masks accessible for adjusting, cleaning, or servicing.

In many commercial machines of the class referred to the mask or frame walls are formed with openings which normally are closed by removable panels or inserts held in the openings. by friction grip lugs or similar fastening devices. In. order to remove the closures or panels it has been necessary to raise the mask hood and insert a screw driver or other tool inside of thetmask and-to pry the panel or closure loose. V a r An object of the present invention is to-provide a typewriter or like machinein which "a frame or mask housing the operating mechanism is formed with an access opening normally COV-i ered by a closure or panel which is mounted on the mask or frame so as to be readily movable to open position by the simple operation of disengaging a latch or like fastener. .1 i

Another object of the invention is toprovide a construction of the character referred to in which the latch or other means for normally holding the panel or closure in closed position is capable of preventing the panel or closure from rattling during operation of the machine.

v Another object of the invention is to providea typewriter or like machine includinga-mask or frame formed with an access opening normally closed by a panel or closure mounted on the frame or mask by hinges so constructed as tofacilitate assembly of the closure or panel on the frame or mask and which, furthermore, are so constructed as to be unobstructive or substantially invisible from the outside of the machine.

Another object of the invention is to provide a machine of the class referred to including a hinged vertical panel or closure and a hinged tophood adapted to interengage with the top of the 'vertical panel for holding the latter in closed posi- :ion when the hood is in its lower or normal posiion. 7

A further object of the invention is to provide a construction of the kind referred to in which handles connected to parts of the mechanism requiring adjustment or manipulation from time to time during the normal use-:of the machine project through apertures in a closure or panelwhich is hinged to the main frameso as to be displaceable to open position to provide accessto parts of the mechanism requiring less frequent atten tion, there being sufficient clearance between the apertures referred to and thehandles for enabling the closure or panel to be swung to its open position without contacting-the handles,

Other objects of the invention will become apparent from a reading of the following description of a preferred embodiment, the appended claims, and the accompanying drawings, in which:

Figure 1 is a fragmentary side elevational view of a typewriter embodying the invention with some parts broken away and others shown in vertical section.

Figure 2 is a fragmentary detail vertical section drawn on an enlarged scale and showing a latch device for releasably holding a hinged front wall panel or closure in its normal closed upright po-- sition and indicating the open position ofthe panel in dotted lines to show the cooperation of a spring latch finger with a stop carried-by the mainframe; f l i i Figure 3 is a rear elevational view drawn on a reduced scale as compared to Figure 1 and show-. ingthe hinged mountin of the movable front panel or closure on a lower fixed front wall frame portion. The parts are shown as viewed in elevation when looking in the direction of the arrows 3-3 in Figure 1.

Figure 4 is a view similar to Figure 3 but showingthe lower front wallportion and the upper front panel or closure in separated relation in order more clearly to illustrate hinge parts formed respectively on the two front wall parts.

Figure 5 is an enlarged fragmentary vertical section taken axially through a part of the hinge connection between the: lower front wall portion and the movable upper front panel or closure.

Figure 6 is a section on the irregular line B -6 of Figure 1 and drawn on an enlarged scale;

Figure 7 is a fragmentary horizontal section on the line l-l of Figure 6; and

V Figure 8 is a fragmentary vertical section on theline 8-8 of Figure 6.

The invention is illustrated as being embodied in a typewriting machine which, except for the displaceable panels or covers. and associated part 's, has the same generalconstructlon as the well known Royal standard typewriter. Among the well known parts illustrated is a main frame A having right and left side wall members H] and iii-respectively and a top shelf H. Key

front cross bar l8 mounts a pivot rod I9 on which is mounted a plurality of type action front levers one of which is shown at 29. A link 2| is connected in the usual manner between the illustrated front lever 29 and one of the key levers l2, and a link 22 is connected between the front lever and a type bar 23 pivoted on a type bar segment 24. Other key levers it! are connected through other and similar type actions to other type bars mounted on the segment 24. The usual type bar head rest is shown at 25.

The upper front cross bar l8 also provides a pivotal mounting at 19 for a lever 26 connected in the usual manner through a link 2'! to tabular stop clear mechanism (not shown). Th lever 26 is adapted to be operated from time to time during normal use of the machine by means of a finger piece or push key 28 which projects forwardly beyond the front of the machine frame. Also extending forwardly beyond the front of the frame for'operation from time to time during normal use of the machine are finger pieces including a ribbon reverse handle 29, ribbon reverse knob 30, bichrome stencil stop handle 3|, and tabular stop set key stem 32.

Other conventional parts shown include a platen 33 and a topcover or hood member 34 which is hinged or pivoted at 35 on brackets 38 carried by th frame top shelf l. The hood 34 is urged to its raised or dotted line position shown in Figure l by coiled springs, one of which is shown at 31.

7 As previously stated, an object of the invention is to provide a construction enabling panels or closures to b displaceable easily from their normal or closed positions in order to provide access to parts'of the mechanism housed within the main frame or mask. In accordance with the inventionpanels normally closing openings in the frame or mask walls are adapted to be released and thereby opened by the simple expedient of pressing a button or otherwise releasing a catch or fastening device.

It frequently is desirable to obtain access to the mechanism adjacent the frame side walls. Accordingly the sidewalls l8 and Ill are formed respectively with access openings 38-38 adapted normally to be covered by closure members or panels 39 and 39 respectively. The right hand closure ,(the closureat the front as viewed in Figure l) is adapted when in closed position to' lie within the opening 38. and is formed with a flange 49 which stiffens the closure and which may also engage a lip 4| formed on the frame or mask wall'lu for limiting inward or closing movement of the panel 39.

Hingemeans generally designated 42 are provided. adjacent opposite ends of the closure 39 for mounting it to swing about an axis adjacent the bottom of the opening 38. The hinge means 4 spectively for urging the closure to swing outwardly to the open position indicated in dotted lines in Figure 6. Outward swinging of the closure to this position is limited by engagement of the outside bottom surface of the closure with the edge portion 38 of the bottom wall of the opening 38.

In accordance with the invention the hinge means 42 mounting the panel 39 within the opening 38 and the springs 58 for urging the panel to open position are substantially hidden so as not to produce an unsightly outside appearance of the mask. Th hinge means 42 are so constructed as inherently to provide this advantage. In order to hide the springs 50 from view the panel 39 is formed with two shroud portions 5! curved concentrically with the sleeves 43 and 44 so as to 42 may be of identical construction so that only one need be described. Each hinge means 42 comprises a pair of spaced axially aligned sleeves 43-43 formed integrally with the bottom edge duced diameter stems 49 projecting toward each other inthe space between the two hinge sleeves fle -44. A coiled spring 59 surrounding the stems- 49 is preloaded so that its opposite end portions 4 press against the lug 41 and the closure 39 re:-

shield the springs 50 from view and so as to merge with the flange 40 to form a continuous arcuate edge along the bottom of the panel 39.

Another feature of the invention consists in the provision of novel and improved means for latching the panel 39 in its closed position in a manner to prevent rattling. In the form shown a keeper member 52 is connected as by spot weld ing to the inside of the panel 39 and has a looking or latching part formed with a notch having inclined walls 53-53 which converge toward each other at the root or bottom of the notch. A latch lever member 54 is pivoted on a bearing 55 carried by a frame bracket 55 which mounts a tie rod shown in part at 51 in Figure 6. The lever 54 is formed with a looking or latching part 58 adapted to be moved into the notch so as to engage simultaneously both inclined wall 53-53. The latching part 58 normally is held yieldably in the notch under the urge of a spring 59 interposed between and connected respectively to the key lever fulcrum l3 and an operating arm forming part of the latch lever 54. A handle 8| connected to the arm 80 extends through an aperture 62 in the side wall ID, the outwardly projecting end of the. handle 8| being equipped with afinger knob piece 63.

Normally the closure or panel 39 is positioned within the opening 38 as shown in Figure 6. The spring 59 urges the latch lever 54 so as to cause the lever latching part 58 to press simultaneously in substantially opposite directions on the notch walls 53 which at this time straddle the latch part 58. In this way the latch part 58 holds the keeper 52 and the panel 39 firmly against rocking in eitherdirection so as effectively to prevent even slight movement of the panel 39 which would cause rattling when the machine is operated. Figure 6 shows the panel flange 4|! in engagement with the frame lip 4|, but it will be understood that, making allowances for manufacturing tolerances, there may be a very small clearance between the flange 49 and the lip 4| which would permit movement of the panel 39 and rattling ifthe latch parts 5852 were not so interengaged as to hold the panel 39 against swinging in either direction.

In order to provide'access through the frame side wall opening 38 it is necessary only to press on the finger knob 83 to rock the lever 54'and disengage the latching part 58 from the keeper 52. This releases the panel 39 and enables the springs 50 to swing the panel outwardlyto the open position shown in dotted lines at 39 in Figure 6. 7 V The left closure or panel 39" may be forms and equipped with a-latch similarly to the closure Constructions embodying-the invention may also include a cover or panel disposed at the front of the machine frame and mounted so as to be displaceable for providing access for easily changing the ribbon spools or cleaning or servicing the parts more easily than can be done by merely lifting the hood 34 in accordance with the practiceheretofore usually followed: In the illustrative embodiment the frame or mask includes a relatively fixed lower front wall mem her or portion 6 4 secured-to the lower front cross bar l6 by screws 65 which also serve to mount the comb guide IE on the cross bar l5. 5 An upper front wall panel member or closure "66 is hinged along its bottom. edge to thetop edge of the lower front wall member Bi and is adapted to be swung from the closed position shown in Figure 1 to the dotted line or open position for providing access to mechanism inside of the mask. 1

The hinge means for mounting the panel or closure 65 on the wall portion 64 is similar to the hinge means 42 referred to in the description of the mounting of the panel 39 on the frame wall ill. The lower front wall portion 64 is formed with hinge sleeves 61 67*, 61, 61 61*, 61, and the upper panel 66 is formed with sleeves 68 68', 68, 68 68 The hinge sleeves on the wall portion 64 and the panel 66 are positioned so as to be interfitted as shown clearly in Figures ,3 and 4. A hinge pin .59, extends through the sleeves 68, '6', 68 andflil and is'formed with a reduced diameter stem 59. A'hinge pin I extends through the sleeves 61 58, and ii! and is formed at its opposite-ends with reduced diameter stems 10 and 79 I. A hinge pin 1! extends through the s'leevesfia 67 58 and 61 and is formed with a reduced diameterstem H frame wall portion 64 and, the panel 66. to urge the latter toward its open position.

In order to render the spring 32 and 13 invisible from the front of'the machine the lower front wall portion 64 is formed integrally with shrouds 61 and 61* which are curved con'oentrically with the associated hinge sleeves and are positioned to cover the springs 12 and 13.

The hood M is so constructed that when it is in closed position it interengages with the upper portion of the panel 56 for holding the latter in its closed or substantially upright position. To this end the hood 34 is formed with a depending skirt 14 adapted to overlap or extend in front of the upper portion of the panel 65. When the hood 3d and panel 86 are thus relatively positioned both are held releasably against movement by engagement of hood mounted looking or catch parts 5 with catch or looking parts comprising resilient spring members 16 mountedon a rearwardly ofiset ledge H at the top of the panel 65. When the parts 34 and 66 are in the closed positions shown in full lines in Figure 1 the hood looking or catch parts 14'l5 straddle the upper looking or catch part of the panel 56 so as in effect to hold the panel in a cushioned grip and prevent rattling. One or more stop lugs l5 secured to the hood 3% are adapted to engage the ledge TI for limiting the downward swinging of the hood 34.

It will be apparent that in order to lift the hood it is necessary merely to press upwardly on the front of the hood sufficiently to overcome the holding action of the resilient spring latch parts 16. At times, for example when it is desired 'merely to clean the type heads, it is sufficient to lift the hood 34 without permitting the panel 66 to move or to be moved to open position. Accordingly, means are provided which act independently 0f the hood 3A. for latching the panel 66 in its closed position. In the form shown a keeper 1B is secured as by spot welding'to the inner surface of the lower front wall portion 64 and is cooperable with a spring latch finger 19 secured to the inside of the panel iiiii The latch finger 19 is formed with a nose part 89 adapted to engage under a latch part 8! on the keeper. Operating means for releasing the latch finger 19 from the keeper [8 includes a push button 82 mounted to project through the lower front wall portion M. The push button 82 is equipped with a stem 83 engaging a heel 84 at the lower end of the finger 19. A spring 85 surrounding the stem 83 urges the push button'82 forwardly to its normal or inactive position, action of the spring 85 being limited by engagement of a stop pin 86 with the keeper Hi. It will be apparent that when the push button 82 is moved rearwardly the finger is will be flexed to disengage the nose from the keeper latch part 8|, whereupon the springs l2 and it will swing the panel 66 to open position providing, of course,. that the hood 34 previously has been raised. it

In-order to prevent damage to the hinge connecting the front wall parts 64 and 6t and in order to provide for bringingthe panel 66 quietly to rest in its open position, astop 8'! is mounted on the frame cross bar It! so as to be engageable with the ,heel 84 of the spring latch finger 79 when the panel. 66 moves to open position. Inasmuchfas the finger i9 is resilient it will yield so: as to bring the panel 58 to rest quietly and without any harmful shock or undesirable noise. The-front panel 66 is formed with apertures 28*, 29 til 3| 32 for accommodating respectively'the parts 28,.29, 30, 3| and 32 previously referred to. These parts extend forwardly of the panel it when the latter is in its closed position so as to be accessible for manipulation from time to time during normal use of the machine without its being'necessary to move the panel 65 to open position. The apertures are large enough to provide sumcient clearance between the aperture walls and the adjustable parts projecting therethrough for enabling the panel 66 to move about its hinge without touching the adjustable parts.

The construction shown herein embodies the invention in the form now preferred but it will be understood that some changes may be made without departing from the invention as defined in the claims.

I claim:

1. In a typewriter or like machine, a frame; mechanism mounted on said frame; a wall panel; hinge means mounting said panel on said frame to swing to normal position for at least partially enclosing said mechanism and to swing outwardly to open position for rendering said mechanism accessible; a latch part on said frame; a spring latch finger on the inside face of said panel engageable with said latch part for holding said panel in normal position; means for disengaging said latch finger from said latch part to permit said panel to swing outwardly; and a stop on said frame engageable by said spring latch finger for bringing said panel'gently-to rest when ithas swung outwardly to a predetermined position;

2. In a typewriter or like machine, a frame; mechanism mounted on said frame; a wall panel; hinge means mounting said panel on saidframe to swing to normal position for at least partially enclosing said mechanism and to swing outwardly to open position for rendering said mechanism accessible; spring means urging said panel to swing outwardly to open position; a latch part on said frame; a spring latch finger on the inside face of said panel engageable with said latch part for holding said panel in normal position; means for disengaging said latch finger from said latch part to permit said panel to swing outwardly; and a stop on said frame engageable by said spring latch finger for bringing said panel gently to rest when it has swung outwardly to a predetermined position.

3. In a typewriter or like machine, a frame; mechanism mounted on said frame; a wall panel; hinge means mounting said panel on said frame .to swing to normal position for at least partially enclosing said mechanism and to swing outwardly to open position for rendering said'mechanism accessible; a keeper on the inside of said frame; a spring latch fingerron the inside face of said panel and being engageable with said keeper for holding said panel in normal position; operating means connected to said finger and including a part extendin through said frame to be accessible from outside the frame and panel for disengaging said spring latch finger from said keeper to permit said panelto swing outwardly; and a stop on said frame engageable by said spring latch 8 said hood and extending forwardly for engagement with said spring when said skirt overlaps said upper panel portion, whereby said panel upper portion with the spring carried thereby are resiliently gripped between said skirt and said finger for bringing said panel to restgently when it has swung outwardly to a predetermined open position.

- 4. In a typewriter or like machine, a frame; a top hood; means at the rear of said hood for pivoting said hood on said'frame; a frontwall panel; hinge means at the lower edge of said panel mounting said panel on said frame to swing about a horizontal axis to a normal substantially upright position and to an outer open position; a skirt on said hood adapted to overlap the upper outside surface portion of said panel when the panel is in its normal position and said hood is closed; a spring carried by said panel upper portion and being exposed rearwardly of said panel; and a catch on the inside of the front portion of The following references are of record in the file of. this patent:

UNITED STATES PATENT Number Name Date 1,510,563 Seib Oct. 7, 1924 2,163,949 Dobson June 27, 1939 "2,273,195 Helmond Feb. 17,1942 2,344118 Wunderlich Mar. 14,-1944 40 83,572 Walter Oct. 27, 1868 282,850 Crouch Aug.- '7, 1883 292,931 Mack Feb. 5, 1884 2,366,106 Helmond Dec. 26, 194.4 2,210,569 Dobson Aug. 6,-1940 1,904,518 Pateman Apr. 18, 1933 2,326,312 Thompson Aug. 10,1943

FOREIGN PATENTS Number Country Date "5. In a'typewriter or like machine, a frame; a top'hood; means atthe rear of said hood for pivoting said hood on said frame; a front wall panel; hinge means at the lower edge of said panel mounting said panel on said frame to swing about a horizontal axis to a normal substantially upright position and to an outer open position; a skirton' said hood adapted to overlap the upper outside surface portion of said-.panel when the panel is in its normal position and said hood-"is closed;' a first catch part on said panel upper portion and being exposed rearwardly of'said panel; and a second catch part on the inside of the front portion of said hood and extending forwardly for catching engagement with said first catch part when said skirt overlaps said upper panel portion, one of said catch parts comprising a spring whereby engagement of said catch parts witheach other will effect'resilient grippingof saidupper panel portion between said skirt and said second catch part.

LEWIS c. MYERS;

REFERENCES CITED I 204,964 Br.

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