US2007359A - Typewriting machine - Google Patents

Description

July 9, 1935. s. I. BERGER 2,007,359

TYPEWRITING MACHINE Original Filed Sept. 14,.1952 2 Sheets-Sheet 1 ATTORNEY July 9', 1935. s. l. BERGER 2,007,359

TYPEWRITING MACHINE Original Filed Sept. 14, 1932 2 Sheets-Sheet 2 LLL aw J INVENTO sh" BY 7 I A %m ATTORNEY Patented July 9, 1935- UNITED STATES PATENT OFFICE TYPEWRITING MACHINE Samuel 1. Berger, Newark, N. .1.

2 Claim.

This invention relates to typewriters, and more particularly to a toy typewriter which may be manufactured at a low cost.

This application is a division of my pending application Serial #633,105, filed September 14,

It is an object of this invention to provide a typewriting machine of rugged structure and positive action which can be readily and conveniently assembled and manufactured at a low cost.

A further object is the provision in a toy typewriting machine of improved means for accurately and positively moving a carriage step by step for letter spacing purposes.

A further object is the provision of a simple and inexpensive carriage for a toy typewriting machine, the carriage supporting a stationary platen.

These and other advantageous objects which will later appear are accomplished by the simple and practical construction and arrangement of parts hereinafter described and exhibited in the accompanying drawings forming part hereof, and in which: v

Fig. l is an elevational view in section of a typewriting machine embodying my invention,

Fig. 2 is a perspective view showing details of mechanism for moving a carriage step by step,

Fig. 3 is a perspective view of the carriage used in the typewriting machine,

Fig. 4. is a bottom view of a portion of the machine showing details of the letter spacing device, and

Figs. 5, 6 and 7 are plan views showing the position assumed by said parts of the letter spacing device while moving the carriage one space,

Fig. 8 is a perspective view showing further details of the mechanism, and

Fig. 9 is a perspective view showing further details of the mechanism.

Referring to the drawings, in Fig. 1, a typewriting machine is shown to include a base 16 supporting a. smallcasing I9 and a side support 20.

Although the drawings only showone side support 20 the complete machine includes two side supports 29 which are spaced apart, one of said supports being omitted from the drawings in order to disclose more clearly details of the internal mechanism.

Each side support 20 has an arcuate slot 2| in which moves a pin 23. A squared shaft 22 is also rotatably mounted in the side supports 20 (see Fig. 1).

Referring to Fig. 2 it will be seen that the pin 23 pivotally connects the legs of a U-shaped member 24 to a pair of links 26 which are also pivotally connected by a. pin 21 to a rockable frame 28, the latter being pivoted on a pin 29 journalled in the supports 20.

'In the side walls of the frame 28 is journalled 5 a shaft 30, having fixed thereto a typewheel 3| and a gear 31, which meshes with a gear 36. The gears 31 and 36 are at right angles to each other. The gear 36 is formed on a plate 35 which is attached by means of eyelets 35' to and moves with the plate 33. The plates 33 and 35 are rotatably mounted by means of an eyelet 34 on a cross bar 32, of the frame 28.

Pivotally supported by shaft 30 are the legs 38 of a U-shaped member, the legs 38 having slots 39 through which pass the ends of a spring 40. Mounted rotatably on the upper end 41' of the spring is an inking roller 4| which is preferably made from an ink absorbing material and is maintained in contact with the periphery of the typewheel 3| by the action of spring 40. A rod 42 is connected to one of the legs 38 and to the side support 29.

Pivotally supported by a pin 29 is an arm 43 having in its free end a pawl 44 which is maintained in engagement with the gear 31 by a spring 45, which is connected to the arm 43 and to the frame 29. Pivotally connected to the pin 21 is a link 45, which is also connected to a lever 41 rotatably supported on the square shaft 22. The lever 41 has an arcuate slot 48 in which moves the bent end 49 of a rod 50. The end 49 of the rod is also connected to an arm 52 having a right angularly directed portion mounted on the squaredshaft 22 to rotate therewith. The lever 41 has a similar right angularly directed portion 5| through which the shaft 22 passes freely, the lever 41 moving independently of the shaft 22. Shaft 22 has an angularly directed arm 54, to the extremity of which is attached a finger piece 55.-

Referring to Fig. 4, the rod is connected to one arm of the bell crank 56 which is pivotally supported by the casing IS, the other arm of the bell crank being pivotally connected to an arm 51 having a toothed extremity 58 directed at right angles to the walls 5| of casing .19 and passing through a slot 59 in the casing, the slot 59 having a greater width than the extremity 58 to enable the latter to move laterally as well as 50 in and out of the slot.

The outward movement of extremity 58 is limited by a shoulder 50 on the arm 51, the shoulder engaging the wall 6| of casing 19. The bell crank and arm are normally maintained in the position shown in Fig. 4, that is, with the toothed extremity 55 projecting outwardly as far as it will go, by a spring 52, which is connected to the bell crank 55 and the casing II.

A bar 53 is positioned in the casing ll adjacent the arm 51. The bar 52 passes through a slot 54 in the wall 5| and has a toothed extremity 55. The opposite end of the bar is enlarged at 55 and passes through a slot in the wall 51 of the casing l9, the enlarged portion 55 having a flange 65 which bears against a bowed spring 55 attached to the wall 51.

when the rod 55 is moved downwardly (see Fig. 4) the bell crank 55 is rotated clockwise to move the arm 51 laterally and downwardly, the toothed extremity 55, of course, having the same movement. Continued movement of arm 51 downwardly causes a lug 15 on the arm 51 to engage the portion 55 of bar 53 to move the latter downwardly against the action of the spring 59.

The base l5 has attached thereto a strip 1| having its side edges bent over to provide guide channels 12, in which slide the flanges 13 of a carriage 14, which has a plurality of spaced indentations 15 to receive the toothed members 55 and 65. At each end of one of the flanges 15 on the carriage are lugs 12' arranged to engage a stop 12' on one of the channels 12, to limit the movement 01' the carriage in both directions. In assembling the carriage and base It, the stop 12' is bent outwardly from the path of lugs 13' until the carriage has been slid into position on the base, after which the stop 12 is bent into the path of lugs 13' to limit the movement of the carriage. Attached to the carriage is a paper guide plate 15, having attached thereto end members 11, which support an arcuate member 15 having a groove 15, in which is positioned a stationary platen It, the latter consisting of a strip of hard rubber or similar material. The platen 8|! is held in place by tabs 5| integral with the end members 11.

Struck out from the plate 15 are two spaced apart bearings 52 (only one being shown in Fig. 3), which support a shaft 53 to, which is attached a roller 54, the latter projecting through an aperture of plate 15 to engage a roller 55 fixed to a squared shaft 51, the latter being supported by and passing through the end members 11. The plate 15 is provided at its ends with ears 89 which also support the shaft 51.

Fixed to the end of shaft 51 is a knob which frictionally engages a fiat spring 52 to prevent free rotation of the shaft 51. Also mounted on the shaft 81 is a U-shaped member having a longitudinal bar 93 extending the length of the carriage and legs 94 which normally bear against the spring 92, the member having a certain amount of resiliency.

At the end of one of the flanges 13 on the carriage is a lug 13' adapted to engage a stop 12' on one of the channels 12 to limit the movement of the carriage.

In operation, a sheet of paper is inserted in the carriage. The plate 32, which has the letters of the alphabet, numerals and other symbols printed thereon, is rotated until the symbol desired to be typed lies between the forks of theindicator 95, which is integral with the frame 28, and the point of printing of the letters is indicated by a pointer 91 attached to the side supports 20. To make an impression of the symbol on the paper, a finger piece 25 is depressed, the finger piece being rotatably mounted on the shaft 22, having a lug 55 which bears on the member 24 to cause the latter to move downward, which movement, through the links 26, causes counter-clockwise rotation of the frame 25, to bring the type wheel Si in contact with the paper directly above the platen 80. The downward movement of member 24 is limited by contact with a rod I5 mounted on the side supports 25. As the frame rotates counter-clockwise the rod 42 prevents similar rotation of the U-shaped member 35, and the latter moves in a clockwise direction and causes the inking roller to pass over the type and ink the symbols before each impression. This arrangement insures uniform and positive inking at all times, it only being necessary to moisten the roller 41 with ink from time to time.

During the downward movement above described, the link 46 rotates lever 41 counter clockwise to draw the rod 50 to the right (Fig. 2) or downward (Fig. 4) to move the toothed extremity 58 from engagement with the indentations 15, and laterally. When pressure is relieved on the finger piece 25, a spring 59, connected to the member 91 and to the pin 21, returns the parts to their normal position, as shown in Fig. 1. During the return to the normal position, the toothed member 58 moves upward (Fig. 4) to engage the indentations 15 and laterally to the left to move the carriage to the left the space of one letter, (see Figs. 5 and 6). Slipping of the carriage is prevented by the toothed member 55 which ratchets over the indentations during the movement of the carriage by member 58.

When it is desired to move the carriage space by space without printing a symbol, the finger piece 55 is depressed to rotate shaft 22 to rotate arm 52 clockwise (see Fig. 8) to pull on rod 50, the lever 41 not being affected due to the lost motion connection enabled by the arouate slot 48. Depressing of finger piece 55 will cause the toothed extremity 58 to move the carriage step by step as above described. Should it be desired to freely move the carriage without the step by step movement, the'flnger piece 55 is depressed as far as possible to cause the lug 15 to engage enlarged portion 66 of bar 53 to withdraw both toothed members 58 and 55 from engagement with the indentations 15 as shown in Fig. 7.

From the above description it will be seen that there has been presented a simple and inexpensive typewriting machine which is accurate and positive in operation, having a rugged structure with practically no parts to get out of order. While the machine herein described is intended primarily for use as a toy, it is obvious that the features embodied therein can effectively be applied to other typewriting machines without departing from the spirit of the invention.

The foregoing disclosure is to be regarded as descriptive and illustrative only, and not as restrictive or limitative of the invention, of which obviously an embodiment may be constructed including many modifications without departing from the general scope herein indicated and denoted in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a typewriting machine, a carriage having a plurality of spaced indentations, a first toothed member and a second toothed member, resilient means urging said members into engagement with the indentations, means to move the first member laterally and into and out of engagement with the indentations, the second member ratcheting over the indentations during said movement, and means on the first member engaging the second member to move the latter entirely out of engagement with the indentations when a predetermined force is applied to the first member.

2. In a typewriting machine, a carriage having a plurality of spaced indentations, a first fiat member having a toothed extremity and. a second fiat member having a toothed extremity and an enlarged portion, said members being movable in parallel planes, resilient means urging said members into engagement with the indentations, means to move the first member laterally into and out of engagement with the indentations, the second member ratcheting over the indentations during said movement, and a lug on the first member engaging the enlarged portion of the second member to move the latter entirely out of engagement with the indentations when a prede- 10 termined force is applied to the first member.

SAMUEL I. BERGER.

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