US1909060A - Typewriting machine - Google Patents

Description

May 16, 1933. A. e. F. KUROWSKI TYPEWRITING MACHINE Original Filed April 24. 1924 2 Sheets-Sheet l I //71 e/7f0r: %%W

A fforrzey.

Patented May 16, 1933 UNITED" STATES PATENT OFFICE ALFRED G. I. KUBOWSKI, OI BROOKLYN, NEWYORK, ASSIGNOB TO UNDEBWOOD ELLIOTT FISHER OOIPANY,OI' NEW YORK, N. Y A CORPORATION OF'DELAWABE WING CHIN E Original application-fled April 84, 1924, Serial 110. 108,883. Divided and tlill application filed Iebruary 4,

1980. Serial No. 485,756.

This invention relates to improvements in typewriting machine cargring cases, and particlarly to types commo y known as portables, in which the machine is normally enclosed within a case adapted to be conveniently carried b hand.

One of the o jects of the invention is to provide a two-part, separable case in which the cover element may be positively and safely secured to the base in such manner as to efiiciently protect the machine from in-' trusion, damage, dust or moisture, under ordinary conditions of transit or storage,.or permit the ready removal of the cover to allow authorized use of the machine, either as aflixed to the base element of the case or removed operably intact therefrom.

Another purpose is to produce a carrying.

case base provided with means which operate effectuall in minimizing, reducin and preventing e transmission of soun incurred by operation of the machine, absorbing air-carried sound vibrations to a marked inafterappear.

In the accom anying drawings,

Figure 1 is a ongitudinal sectional view of an embodiment of the invention, illustrating the relation of parts to a conventional typewriter shown in broken lines within the case.

Figure 2 is afragmentar sectional view taken in a lane represented y the characters ZZ of igure 1.

Figure 3 is a fra taken on line X- entary .sectional view of Figure 2.

Y of Figure 2.

Fi ure 5 is another like view taken on line W+ of Figure 1.

Figure 6 is a partial plan view of the base 18, inclined downwardly Figure 4 is a similar view taken on line of the finishingframe of the typewriter in detail.

Figure 7 is a front elevational view of the same.

Figure 8 is a fragmentarysectional view taken on line VV of Figure 6.

Figure 9 is a partial sectional and partial side elevational view of one of the inner frame feet, drawn to an enlarged scale.

a The ortable t pewriter, shown in Figure land esignate nerally by the numeral 10, is standard in all respects and constitutes a complete commercial entity.

. The carrying case is composed of a top or front plate 15, 'preferabl made of well-seasoned wood, as is also theli 16. An integral piece of sheet-metal is formed to present side walls :17 and a cover at the front 19 and havinginwardly-curve edges 18engaged in corresponding recesses in the upper and end edges of the plates 15 and 16, to which the cover-plate is rigidly secured, and the entire outer surface of the casing is insheathed in leather.

A strap handle 20 is provided on the top ottom or base plate I plate 15 for convenience 1n carrying, and a I lock, generally designated by the numeral 21, is furnished to provide security from unwarranted intrusion.

Fixed near each of the four corners of the bottom plate arebutton-headed nails 22 or the like to protect the leather-covered surface of the casing when resting on its bottom or lower end, the foregoing elements constituting the cover or removable portion of the case.

The base-portion is composed of a wooden frame 23 formed from quarter-round molding with mitcred joints, freely receivable within the'lower portion of the cover.

A metal plate 24 is secured to the flat lower surface of the frame 23, and is provided on its lower exposed side with a leather covering,

from which extend four cushion elements, as

the rubber feet 25, held in rigid engagement by cement or like adhesive.

The rear member of the frame 23 contains recesses26 adjacent its ends, these recesses havin metallic linin 27 suited to be engage %)y a pair of hoo s 28, fixed to-the inner surface of the-bottom plate 16, and adapted to interlock with the linings to removably engage the rear end of the base within the cover, as best shown in Figure 3.

Set midway in the length of the front member of the frame 23 is a button-headed stud 29 projecting to interlockwith a spring latch incorporated in the lock 21, see Figure 1, thus co-operating with the hooks 28 at the opposite end to securely lock the cover to the base, constituting a single carrying unit.

- The typewriting machine 10, as indicated in Figure 1, is composed of a pair of ribbonspool housings 51 and a curved dust-guard 52. The brackets 53 for the housin s 51 together with said housings and the dust-guard 52 co-operate to provide dust-guards for the front links (not shown) of the type-action and the type-heads (not shown). Cast side frames 11 having extending base pads 12 serve as feet during assembl of the machine, the same being drilled and tapped, as shown in Fi ure 8, to receive temporary rubber feet.

The typewriter frame sides 11 terminate, as shown 1n Figure 1, at the inner row 'of the ke -levers to define a machine base area, but aflbrding no protection to the bank of keys, and it would obviously add greatly to the weight of the frame and easing if it were continued around-the keyboard in the usual manner. 4

The present invention contemplates the formation of a separate enclosing finishing frame 54 or silencing pocket shaped by powerv press methods from a single piece of sheetmetal to produce opposed side walls 30 and rear wall 31, all of which have inwardlycurved or rounded-over upper edges 30 and 31', presenting a smooth and agreeable finish, and serving as dust-guards for the encased portion of the typewriting machine.

The front wall 32 is shaped in conformity with the general contour of the keyboard, which is enclosed by itat the front and sides, and is provided with an inreaching ledge 32'.

The lower edges of the finishing frame are flanged inwardly, presenting a continuous ledge 33, the sides being stiffened by a crossbar 34 disposed in the plane of the ledge 33.

A base-plate or floor 35 is riveted to the ledge 33, along the side and rear walls, and also to the cross-bar 34, this plate having a uniform shallow central de ression 36 openatin to stiffen the plate, a ording a closure for t e base of the machine and space for the operation of the machine parts, and increasing the rigidity of the structure as a unit.

The base-plate may be provided with openings 37 arran ed in any preferred manner, as 1n icated in igure 6, and near its corners is provided with openin s 38 registerable with the o enings in the eet 12 of the machine. The unction of these openings is to break the base which would otherwise be the same as the sound-producing diaphragm of a drum.

These openings materially reduce the noise which would result if the base were left as a continuous diaphragm.

Secured to the inner surfaces of the enclosing finishing frame walls is a relatively thick layer of soft porous felt 39, the same acting to absorb sound emanations, which would otherwise be transmitted to the sup orting base.

The upper surfaces of the ledge 33, crossbar 34 and entire base-plate 35 are similarly covered with a like but thinner felt fabric 40, and thus, when the machine is set in the enclosing frame, its feet rest upon the lined surface 40.

The feet 41, shown in detail in Figure 9, consist of a cylindrical rubber block having an inverted conical top portion 42 disposed within a drawn metallic cup 43, provided with a pressed-in or riveted screw-threaded stud- 44 suited to engage in the pads 12 after passing through the openings 38 in the casing base-plate.

In order to secure the feet 41 to the base of the carrying case and; prevent any relative shifting movement, flanged metallic rings 45 are fixed in appropriate locations in the base, these rings being receptive of the feet and which are ositively but removably held therein b t e following means.

Exten ing op ositely outward from the sides 30 of the finishing frame are rigid studs 46 having rounded outer ends, these studs being suited to engagein openings formed throg' h latch-elements 47, pivotally supported 111:; rackets 48, fixed on the base-plate 24, as best seen in Figure 4.

The outer ends of the latches are curved to rovide fin er-holds and their inner ends proect beyon their pivotal points to engage the free end of a sprm detent 49 riveted to the plate 24 and extending below the pivot in the bracket 48, the detent being so shaped and arranged as to hold the latch 47 in either a raised, operatively engaging, position or when turned down to clear the studs 46.

These latches are readily accessible when the cover of the. carrying case is removed and are operable by hand only, no tools being required to release the machine from the base.

As a further factor in rendering the machine substantially noiseless, when used upon the base of the carrying case, the base may be provided with a thick layer of felt 50 on its entire upper surface, the, same preventing transmission of sound.

It will be noted that the two side frames 11 are machine standards to promote the assembly of the parts and establish a machine-base area that does not include the keyboard; that the assembled machine is enclosed by a highly polished finishing frame which also includes a forward extension to protectively enclose the keyboard of the machine; that the enclosing finishing frame .is formed with a floorsection of substantially the same area as the established base of the machine to enclose the machine on the under side; that the finishing frame is attachedto the machine side frames by cushioning feet; that the finishing frame is lined throu bout with felt to form a soundabsorbing pocet; that the finishing frame is secured to a sound-absorbing baseboard; and that the sound-absorbing baseboard primarily is a unit of the typewriting machine to increase the base-area of the machine when in use and only coacts with the cover when the machine is not in use or being carried from place to place.

It will also be seen that the carr ing case, being formed with a sheet-metal aselate for the typewriting machine and a s eetmetal opposite side wall for the cover, provides a carryin case having a minimum thickness, materially reducing the thickness of carryin cases in which the corresponding walls are formed of wood or other compositions. The arrangement permits the sheetmetal walls to be spaced a minimum distance apart, with sockets to receive the feet of the typewriter, so that they will rest directly upon the base. It will be noted that the typewriting machine with its outer finishing frame resting upon the base-plate, provides a chambered pocket between the bottom of the finishing frame of the typewriter and the base-plate into which sounds emitted through the bottom of the finishing frame are received. This arrangement permits the positioning of a sound-absorbing padding on the base-plate to further deaden the sounds which enter this chambered pocket. The padding extends over the base-plate between the sockets for the feet of the machine and the flanges or frame-members 23 of the base without necessitating an increase in the space between the two walls.

To assemble the typewriting machine 10 with the frame 54, the latter, which has been previously polished, is arranged upright on ase-plate 35, whereupon the completely assembled t pewriting machine 10 is inserted downwar ly into the frame 54, as shown in Figure 1. When the machine 10 and the frame 54 are assembled as shown, the openings of pads 12 align with'the openings 38 of base-plate 35 so that thestuds .44 are readily screwed into the pads to secure the feet 41 and frame 54 to the typewriting machine. 1

Variations may be resorted to within the scope of the inventions, and portionsof the imlplrovements may be used without others.

aving thus described my invention, I

claim:

1. A sound-absorbing .finishing mask for a portable typewriting machine frame having attaching feet, said mask comprising an outer frame to surround the lower portion of a t pewriting machine frame but spaced there rom, said outer frame comprising side,

including a stiffening bottom plate extending from the back portion forwardly and con-,

back-and frontportions and a base, said base I upon said bottom plate and filling the space between said mask and typewriter-frame, and.

forming a sound-absorbing pocket.

2. In a portable ty. ewriting machine having a mainframe, a nishing mask enclosing.

the main frame and the lower portion of the typewriter, including the keyboard thereof, said mask havin inturned edges at the top and inreaching anges at the bottom, a floor secured on the flanges, said floor having a central depressed portion and containing openings registerable with the foot-attaching openings in the typewriter, and means for removable engaging said mask to the base of the main frame.

3. In a portable typewriting machine having a main frame, a finishing mask enclosing the main frame and the lower portion of the typewriter, including the keyboard thereof, said mask having inturned edges at the top and inreaching flanges at the bottom, a floor secured onthe flanges,a layer of felt fixed on the inner surfaces of said mask and its floor, said floor having a centrally depressed portion containing corner perforations, and cushion foot-carrying elements having threaded studs passing through the men tioned perforations to engage in the footpads of the machine.

-4. In a portable typewriting machine having a main frame, a finishing mask enclosing the main frame and the lower portion of the typewriter, including the keyboard thereof, a bar extending between the sides of said mask, a. plate fixed on said bar and on inreaching flanges at the rear and sides of the mask, noise-absorbing linings on the inner surfaces of said mask and plate, and means associated with the feet of the typewriter for clamping the plate thereto.'

5. A portable typewriting machine having a double frame consisting of inner supporting andouter masking members, the inner frame-member supporting moving parts of the'machine, the outer frame-member being formed with a continuous overhanging flange extending around the sides, and front of the mask, sound-absorbing padding arranged under said flange and occupying the space bet-ween said frames at the sides thereof, and means whereby the frames are secured together.

6. As a new article of manufacture, a sound-absorbing finishing mask for attachment to a portable typewriting machine, including an outer mask-member struck up fromsheet-metal to surround. he sides and front of the machine, and having a floor to extend thereunder to serve as a brace and to form a sound-absorbing pocket, and a soundabsorbin padding secured in said maskmember for packing against the sides of the typewriting machine. 1

7 A portable typewriting machine having an inner supporting frame-structure for the operating parts of the typewriting mechanism and from which the keyboard forwardly extends, and a finishing frame therefor including side walls extending around said supporting frame-structure and the forwardly-extending keyboard and a floor extending under said supporting frame-structure of the typewriting machine, thereby forming a sound-absorbing pocket for encasing the noise-producing parts of the typewriting mechanism, a sound-absorbing material being lined between the inner frame-structure and the finishing frame.

8. A typewriting machine of the portable class provided with relatively movable parts including a platen and keys, and having a skeleton self-sustaining main frame for entirely supporting said parts, said keys o ccupying a position in front of the skeleton frame, a surrounding casing complementary to said frame and pressed from thin sheetmetal into a shape to embrace the frame and constitute an outer decorative mask applied upon said self-sustaining main frame, said mask including side portions below the platen and masking the sides of said frame but spaced and disconnected therefrom, a back masking portion at the rear of said machine, and a front portion inclining do'w-nwardly to mask the front of said frame and extending around and forwardly of said keys, said mask having a bottom member rigidly connected to said side members to brace the same, all of said side, back and bottom members provided with sound-absorbing linings to form a sound-subduing pocket, and said mask being structurally independent of said frame, and means for fastening said mask to the bottom of said frame.

9. A typewriting machine of the portable class provided with relatively movable parts including a platen and keys, skeleton selfsustaining main side frames for supporting a the same, said keys occupying a position 1n front of the skeleton framesand a surrounding casing complementary to said frames and shaped to embrace the frame but spaced and disconnected from the sides thereof and constituting an outer decorative mask for the portable typewriting mechanism, said mask being pressed from thin sheet-metal and having inturned flanges at its edges and including side portions masking the sides of said frames, and having a front masking portion extending downwardly from the front ofsaid frames and having an extension around and forwardly of said keys, said mask being structurally independent of said frames, and means for fastening the mask to said frames. 10. A typewriting machine of the portable class having a self-sustaining skeleton main flanges to support said side walls and extending from the rear forwardly but leaving an open space at the forward end of the mask, and means for fastening said bottom with the flanges to said frame.

11. A typewritin machine of the portable class havin a sel -sustaining main framework and re atively movable parts of a typewriting machine supported on said framework, a one-piece decorative encirclin mask pressed from sheet-metal and space from the inner framework and having side Walls and a rear wall enclosing said framework, and having a bottom, said side walls having inwardly-extending flanges, and a lining of sound-absorbing material on the inner faces and bottom of said mask to enable them to co-operate to form a. sound-absorbing pocket, said bottom being fixed to said flanges and extending from the rear forwardly but leaving an open space at the forward end of the mask, and removable feet having means for fastening said base to said framework.

12. A compacted typewriting machine of the ortable class, including movable typewriting mechanism and also including an entirel self-supporting main skeleton framing whereon said movable mechanism is mounted, said framing including skeleton side frames, and said machine including a decorative mask for both said framing and members for masking said side frames, sound subduin linin s between said side members and sai side rames, and also includin a keyboard-surrounding portion extended forwardly from said side ortions and having rolled-over stiffening e ges, said side masking portions joined at the front b a front masking'portion, all .of said masking portions being structurally independent of said framing and encasing the same and attached thereto.

13. A compacted typewriting machine of the portable class, including movable typewriting mechanism and also including an entirely self-supporting main skeleton framing whereon said movable mechanism is mounted, said machine including a decorative mask for both said framing and said mechamsm, said mask pressed from thin sheet-metal and including op osite side members for maskin said side rames, and also including a keyboard-surrounding portion extended forwardly from said side portions and having rolled-over stiffening edges, said side masking portions joined at the front by a front masking portion, all of said masking portions being structurally independent of said framing and encaslng the same and attached thereto, said side portions having inturned flanges, and means for attachin said mask to said framing.

14. compacted typewriting machine of the ortable class, including movable typewritmg mechanismand also including a selfsupporting main skeleton framing whereon said movable mechanism is mounted, said framing including skeleton side frames, and

said machine including a decorative mask for both said framingand said mechanism, said mask pressed from thin sheet-metal and including opposite side members for masking said side frames, and also including a key-.

board-surrounding portion extended forwardly from said side ortions and having rolled-ovenstifiening e ges, said side masking portions joined at the rear by a rear maskf ing portion and also joined at the front by a front masking portion, all of said masking portions being structurally independent of said framing and encasing the same and attached thereto, said side portions having inturned flanges, and means for attaching said flanges to said side frames, said case also having a bottom bracing portion, and said sides, said rear portion and said bottomportion having a sound absorbing lining toenable them to co-operate to form a sound-confining and subduing pocket.

15. A typewriting machine ofthe portable class rovided with relatively movable arts inclu ing a platen and keys, skeleton sel -sustained side frames for supporting the same,

said ke s occupying a osition in front of the ske eton frames, an a surrounding casing complementary to said skeleton frames and shaped to embrace the frames but spaced from the sides thereof and constituting an outer decorative mask for the portable typewriting mechanism, said mask being pressed from thin sheet-metal and having inturned flanges at its edges and includingside portions masking the sides of said frames, a back portion masking the rear of said frames, and a front maskin portion extending downwardly in front 0 said frames and having an extension around and forwardly of said keys, linings of sound-deadening fibrous material being provided upon the side and rear walls of said mask to enable them to co-operate to form a sound-absorbing enclosure, said mask being structurally independent of said frames, and means for securing the mask upon said skeleton frames.

class having a double frame includin a selfsustaining skeleton main portion, re atively movable typewriting mechanism being supported on said main frame portion, and also including a decorative encircling mask por tion formed from sheet-metal and with its sides separated and spaced from the structure of said main portion and including side and rear walls and a front enclosing said main portion, said side walls having inwardlyextending under flanges, a transverse member for attachment to both said flanges'to connect and support said side walls, and means for securing together said transverse member, said flanges and said main frame

Images