US2023713A - Typewriter - Google Patents

Description

Dec. 10, 1935. A, E EE ETAL 2,023,713

TYPEWRITER v Q Filed Nov. 14, 1932 s sheets sheet 1 INVENTORS If Dal/Z1) F gag/and IATTORNEYS" Dec. 10, 1935.

J. A. SUMMERLEE ET AL TYPEWRITER Filed Nov. 14, 1932 3 Sheets-Sheet 2 en m T U 0 m m a Maw Jase 00 Dec. 10,1935. J A, SUMMERLEE ETA 2,023,713

TYPEWRITER Filed NOV. 14, 1932 5 Sheets-Sheet 3 INVENTORS %0$ ep gunymefilee 4% mz, 3%

ATTORNEYS Patented Dec. 10, 1935 I tion of Michigan ,i e l iwe bsr 14, 1 2 S aiN 6 .2 4a j i. Machine Company, Detroit, Mich a corpora-j 2 Claims; (015197-186) v This invention relates to a typewriter. It is particularly concerned with the general construction of a vtypewriter andlc'omprehends a new manher of building and assembling a typewriter and enclosing itin an attractive casingfl'f p Typewriter mechanisms fare generally assembled in and supported by integral cast frames which are of an irregular box likeshapeh The assembly of the'mechanism in tlieselframes is. necessarily somewhat slow "and aWkWardQLarge openings have to be left in the sides of the casting to'permit access/ to the typewriter mechanism and, when the typewriter is completed, themech anismlis almostentirel'y"exposed atthe sides, the front, and the rear; In fact, the cast frames comprise little more'than corner posts connected by top and bottom braces. These corner =posts andibraces are finished on lth'eoutside to improve their appearance but the mechanism inside, the cast frame is not nicely finished andfvie'wedas a whole, the completed typewriterfdoes not present a pleasing or finished appearance. so much of the mechanism is exposed thatqafte'r a short period of use; theexpos'ed mechanism becomes dirty,. the dirt teh dsl'to interfere with proper operation and causes wear, and themac hine looks like an assembly of dirty, unfinished: levers,,key s, gears,etc.l H

The present invention comprehends building a typewriter by starting ,on' anventirely/newz nd different basis. Instead" of assembling the mechanisni on a cast frame which forms theexterior surface of 't'he machine, the mechanismis; assembled in groups of parts and these groupsare then 1 mounted between two sheet-metallv 'sid e{plates which support the entire mechanism but which are notvisible when the machine'is" completed. This facilitates the assemblyof the machine and makes it unnecessary to use extreme care toavoid scratching the finish" of a castframe: while the typewriter is being put together. After; the machine is completely finished, an: enclosing casing is detachably secured to the side plates. This cas'ingfis preferablymade' in anumber ofparts and mounted in sucha way that each part may be independently removed to permit access to a given part of the machine without disturbing the remaining parts of the casing. y

The general object ofthe invention is an improved typewriter construction;

A more particular object is t provide a construction that will facilitate the assembly of a typewriter. m a,

' A further object is to provide an improved construction that will not only facilitate the asiq r l writer mechanismand to attached;

7 panels making up the casing},

carriage, and other usual parts making up-a comsembly but'which will also: apmvet eaters-a1 a pearance of the typewriter. a

- Otherobjects and advantagesof the invention will-appear from the following Specificatio and Y Y drawingsn a c An embodiment of the'invention is shown- 1in theaceompanying drawings in -whi'ch:,- 1,;

. Figure 1 is a;perspectiveviewv 'of, the'complete 3 typewriter;

, Fig 2.is a perspectiveview illustrating ,particularly the metal side plates thatsupport the type-' m which the casing is i Fig. 7 3 is a separated perspective of the} metal i Fig. 4 is a perspective ofconeof the units of-the typewriter 'mechanismwhich includes the type bar segment and the iescapement mechanism;

Fig. 5 is aperspective view ofanother unit of 3 the typewriter mechanism including the ;-ribbon feed and'reverse.-,; r

The typewriter mechanismincludes type bars controlled by depressible keys a traveling-paper plete typewriter mechanism. Itv has nnlot been considered necessaryito illustrate all ,these parts in detail because anunderstandingeof their ,details is not necessary for acomprehension ofthe presentinvention but someof them will be briefly referred to later, It is sufficient to know that the typewriter mechanismincludes, all the usual and necessary partsto make a;complete machine;

The typewritermechanism is-supported by two fsi delplates V out of sheet. metal. These two plates, arealike and they are unfinished although-they are given a treatment or coating to prevent rusting. The plates are provided with openings I2"and;|3 to. permit access to the typewriter mechanism for 40 service and re pair.., Attached to each plate-are ,two rubber covered feet I4 whichare adapted to {rest on a table ordesk on which the typewriter maybe placed. Since the two plates-are alike,

theirmanufacture is a very simple stamping and 45 drillingoperation,

The different groups-cf parts making up the typewriter mechanismv are ass'emblediseparately .aslunits, and then attached to the sidegplates; the 4 shafts orcross memberson which the groups or 50 {units are assembled serving to space the side plates and form a bracing,a connecting and-supporting structure between said plates.

, One group of parts comprises the carriage unit 20 shown in Fig. 1. This group may be lnden and lin er which arev stamped 35 finished or enameled or configured in such a way as to constitute the exterior frame of the typewriter.

What is claimed is:

1. A standard-size, front-strike typewriter comprising a pair of spaced, fiat, interchangeable, and unfinished sheet-metal side plates provided with openings for the receipt of members that are to be attached to them, typewriter mechanism, including cross members and pre-assembled groups of parts, positioned between and attached to said plates to form a connecting and bracing structure making, in combination with said side plates, a rigid assembly comprising a complete and operative typewriter that may be quickly and easily assembled, without the use of special care to avoid damage to the finish of the parts, by preassembling groups of parts and then assembling and connecting them together with said cross members between said unfinished plates, and a finished casing detachably secured to said side plates, said casing being attached to said completed assembly and acting to cover said side plates and to completely enclose said typewriter mechanism while leaving exposed such parts as must remain exposed for operation, said casing having independent side and rear panels detachably secured to said unfinished sheet metal side plates and to each other whereby any one of saidpanels may be independently removed without disturbing the operative position of the remaining panels to give access to a given part of the machine. 1

2. A standard-size, front-strike typewriter comprising a pair oi spaced, flat, interchangeable, and unfinished sheet-metal side plates provided with openings for the receipt of members that are to be attached to them and with openings to permit access to mechanism that may be located between them, typewriter mechanism, including cross members and pre-assembled groups of parts, positioned between and attached to said plates to form a connecting and bracing structure making, in combination with said side plates, a rigid assembly comprising a complete and operative typewriter that may be quickly and easily assembled, without the use of special care to avoid damage to the finish of parts, by pre-assembling groups of parts and then assembling and connecting them together with said cross members between said unfinished plates, anda finished casing detachably secured to said side plates, said casing being attached to said completed assembly and acting to cover said side plates and to completely enclose said typewriter mechanism while leaving exposed such parts as must remain exposed for operation, said casing having independent side and rear finished panels, the side panels being detachably secured to the said unfinished sheet metal side plates and the rear panels being detachably secured to the side panels, whereby any one. of said panels may be independently removed without disturbing the operative position of the remaining panels for access to a given part of the machine.

JOSEPH A. SUMMERLEE. DWIGHT P. ROWLAND.

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