US1243954A - Type-writer. - Google Patents

Type-writer. Download PDF

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Publication number
US1243954A
US1243954A US11201516A US11201516A US1243954A US 1243954 A US1243954 A US 1243954A US 11201516 A US11201516 A US 11201516A US 11201516 A US11201516 A US 11201516A US 1243954 A US1243954 A US 1243954A
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Prior art keywords
hammer
lever
escapement
movement
carriage
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Expired - Lifetime
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US11201516A
Inventor
Edward Krusius
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HAMMOND TYPEWRITER Co
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HAMMOND TYPEWRITER Co
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Priority to US11201516A priority Critical patent/US1243954A/en
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Publication of US1243954A publication Critical patent/US1243954A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00Hammer-impression mechanisms
    • B41J9/44Control for hammer-impression mechanisms
    • B41J9/48Control for hammer-impression mechanisms for deciding or adjusting hammer-drive energy

Description

Patented 0013., 23; 1917.

3 MEETS-SHEET I.

E. KRUSIUS.

TYPE WRITER.

APPLICATION FILED JULY 29.1916.

ATTORNEY E. KRUSIUS.

TYPE WRITER.

APPIrlCATION FILED JULY 29.19115.

Patented Oct. 23,1917

3 SHEETS-SHEET 2.

A TTOFIWE Y E. KRUSIUS.

TYPE WRITER.

APPLICATION FILED JULY 29.1916 L%3,95&, Patented 0012.23, 1917.

3 SHEETS-SHEET 3.

A TTORNEY EDWARD KBUSIUS, OF NEW; YORK. N. Y., ASSIGNOR EIJO HAMMOND TYlPEWBITEBr 7 COMPANY, A COBEOBATION'OF NEW YORK.

TYPE-WRITER.

Specification of Letters Patent.

, Patented oct. 23,1917.

Application filed m 29, 1916. Serial No. 112,015.

To all whom it may concern:

Be it known that I, EDWARD KRUSIUS, a citizen of the United States, and resident of New York, in the borough of Manhattan,

city and State of New York, have invented and variable so as to produce the proper.

spacing for different sized letters. A further object is to provide an improved hammer, the force of which will be automatically regulated with the changing of the spcing, a small letter as will beseen, requiring a light blow, and a large letter requiring a heavier blow.

With these and other objects in view my invention is shown in the accompanying drawings, and will be hereinafter more fully described with reference thereto, and finally pointed out in the claims.

In the accompanying drawings:

Figure 1 is a top plan view'of a typewriter with parts removed, and showing my improvements embodied therein,

Fig 2 is a vertical sectional view,

Figs. 3 and 4 are rear views showing two positions of the spacing and hammer mechanism,

Fig. 5 is a detail of the spacing means,

'Fig. 6 is a detail view of the band having openings through which the hammer strikes the paper,

Fig. 7 is a detail view of the slidable pawl operating member, and

Fig. 8 is a sectional view of the handle of the regulating 'lever.

Similar reference characters indicate cor responding parts throughout the several figures of the drawings.

Referring to the drawings, and more particularly to Figs. 1 and 2 thereof, the typewriter frame 10, which to show one embodiment thereof, is designed forfthe general type of typewriters known as the Hammond, in which the type are provided upon movable matrix 11 (shown in dotted lines), mounted upon the periphery of a circular support 12, the type being brought into 19in rest position.

are positioned during the initial movement proper position upon the initial pressure exerted \upon the key 13, continued downward pressure thereon operating the hammer l4, thereby making an impression upon the paper which is inserted between the type and ribbon as is well known. After printing, the carriage moves one space by means of a carriage rack 15 controlled by an escapement mechanism, to be presently more fully described, the carriage being propelled by a spring (not shown), in the usual manner. A yoke member 16 is pivotally mounted between supports 17 and 18, formed upon the frame, and at its forward end is in the form of an arcuate bar 19 beneath which rest the inner ends 2O of the keys 13. These ends as will be seen, are spaced from the bar In this way the type of the key'by upward pressure on the end 21 of a rod whlch controls the movement of the respective letter on the matrix 11,

the complete movement of the keys swinging the yoke upwardly." There is also mounted between the supports 17 and 18 above the'pivot points of the yoke, a rod 22 upon which is pivotally mounted a hammer frame 23, carrying at its endthe hammer 14. At one side of the frame 23 there is provided a downwardly extending arm 24 between the end of which and the frame provided at its endwith two spaced lugs- 30 and 31, between which is disposed the inwardly bent end v32 of a lever 33 pivoted to; the frame at 34, the said bent end extending through an opening 35 in the frame.

A hammer ontrol lever 36 is loosely andpivotally m0 nted upon the escapement mechanism shaft 37 supported between suitable bearings 38 and 39 of the frame, the lever being'arcuately shaped at one side of the shaft, and U-shaped as at 40 at the other side, said U-shaped portion being provided with'bearing portions 41 and 42 which en-1 gage the shaft. The end of the curved portion of the lever is connected by a universal joint 43 with a projecting rod 44 on the hammer frame. An escapement wheel 45 is mounted on the outer end of the shaft,

and at the inner side of the bearing 38, there is provided a disk 50, both the disk and the ratchet being rotatable with or fast to the shaft. Loosely mounted upon the shaft 37 there is provided a gear wheel 46' meshing with the rack 15, and a ratchet 48 movable with the gear wheel 46, and engaged by a spring pressed pawl 49 provided on the side of the disk 50. This construction it will be seen permits manual movement of the rack in one direction away from its controlling spring tightening the same, and movement in the other direction by the force of the spring upon release 'of the escapement.

In order to permit the free manual movement in either direction, a slidable frame 47 provided at one end with a bearing 47, which engages the projecting reduced end 37 of the-shaft 37, which acts as a guide therefor, and at the other end is provided with a collar portion 47", which surrounds a portion of the ratchet 48 not engaged by the pawl 49.

A. rod 105 movable with the carriage engages a bearing 106 and a recess 107 pro vided respectively in each side of the frame 47 This rod is controlled by thumb levers at the end of the carriage, which upon being operated, throw the rod'forwardly, to gether with the frame 47 the projecting end 37 of the shaft and the free space of the ratchet 48 permiting this, whereupon the beveled edge 108 of the collar 47 b raises the pawl 49 from engagement with the ratchet, allowing the carriage then to be manually moved in either direction.

A. lu or projection 51 is provided on the U-s aped portion 40 of the lever 36, and is disposed beneath a disk 52 provided upon an upright shaft 53 journaled in the frame, and provided at its lower end with a gear wheel 54, engaged by the toothed end 55 of a bar 56, extending to the front of the typewriter, and guided in its movement by slots 57 and 58 therein. engaging screws 59 secured to the frame. A series of different sized and adjustable stops 60 are provided in the disk 52 which are adapted to be brought by movement of the bar 56 successively above the lug '51, the space be tween the end of the stop. and the lug in the lower position of the lug determining the length of the spacing as hereinafter more fully pointed out. The bar 56 is provided at its forward end with a pin 61,

- which engages the lower end of a lever 62 pivoted at 63 to a plate 64 secured to the frame. A handle 65 (Fig. 1) is provided on the upper end of the lever 63, a. spring controlled pin 66 being mounted therein which engages a series of holes 67 provided in the plate which correspond respectively to the stops 60, and are preferably designated by numbers. By pulling outwardly aaaaese on the handle, it will be seen the pin may be disengaged from the hole, and moved to the hole desired, this action at the same time revolving the disk 52 through the bar 56.

The lever 33 is provided with two arms 68 and 69, the arm 68 being provided at its end with a detent 70 adapted to engage the ratchet wheel 45, and the arm 69 engaging by a pin 71, a slot 72 provided in a horizontally movable member 73, mounted upon the frame by pins 74 and 75, and guided in its movement by slots 76 and 77 in said member. An eirlarged portion 78 is provided on the member 7 3, having an'arcuate slot 79 therein, circumferential with respect 80 to the ratchet wheel 45.. This slot is engaged by a pin 80 provided in the end of a pawl 81 pivotally mounted upon the lever 36 and adapted to engage the ratchet wheel 45. A- weighted pawl 82 pivoted to the frame by means of a set screw 82, may be engaged with the ratchet wheel at the opposite side from. the detent 81, to hold the ratchet wheel 45 when it is desired to release the detent 81 during adjustment. Tightening of the set screw normally holds the pawl 82 out of engagement.

The operation is as follows:

\Vhen the key is depressed, the initial movement as above pointed out moves the proper letter into place, and upon continued movement, swings the member 16 upwardly depressing the arm 27 which moves the lever 33 downwardly, engaging the detent 70 with the ratchet wheel 45. At the same time the arm 69 moves outwardly carrying with it the slidable member 73, which disengages the pawl 81 from the ratchet, whereupon the hammer by force of the spring 25 raises upon its pivot 22, and strikes the ribbon and type, at the same time moving the U-shaped portion 41) of the lever 36 and the lug 51 away from the sto )s 60, and striking a pin 51 which stops t e hammer after it has delivered the correct blow, as clearly shown in Fig. 4. \Vhen the key 13 is released, the lever is moved upwardly disengaging the detent 70 from the ratchet, and moving the slidable member 73 inwardly, at the same time engaging the pawl 81 with the ratchet wheel. This movement is practically instantaneous, and'upon release of the ratchet by the detent 76, the same turns by reason of the free space be tween the lug 51 and the stop 60, this action being brought about by movement of the carriage rack 15 engaging the rear wheel 46, the space between the lug 51 and the stop 60 determiningthe space the carriage rack is permitted to move. The hammer at the same time is brought away from the type. The position of the stops 60 shown in the drawings is for the. longest spacing, for use with large characters. When a smaller character is used, the corresponding stop is quently there is less tension on the spring- 25, so that a lighter striking force results, which is desirable with small type. In this way a sheet of paper having different types of letters will appear of uniform density, that is the smaller letters will be as light as the larger letters, by reason of the proportionate striking force exerted thereon. -The arcuate slot 79 of the slidable member 73, by

reason of its equal radius at all points from the shaft 37, holds the pawl 81 for any length spacing in the same relation with the periphery of the ratchet wheel, thereby resulting in the uniform and positive action thereof.

. The universal connection between the hammer and the lever 36, and the stopping of lever 40 against pin 51*, enables a positive and sharp striking of the hammer, and disallows any double impression, as when the hammer rebounds upon the initial blow and strikes the type a second time.

A spacing bar 90 is provided at the front of the typewriter, the operating lever 91 of which extends beneath the arcuate bar 19, and also beneath the end 92 of a lever 93 pivotally mounted upon a rod 9 1, shown in detail in Fig. The end of this lever extends downwardly, and is rounded to form a cam surface 95 which engages a roller 96, provided on an upstanding portion 97 of a slidable bar 97. This bar is disposed in a slot in the frame and at its forward end extends upwardly as at 98, a slot 99 being provided therein which is engaged by a pin 100 of the "frame, to guide its movement. The end of the bar is adapted to bemoved forwardly upon depression of the cam surface 95 in such position as to engage the frame 23 and stop the hammer just before it strikes the ribbon and type, thereby preventing any mark appearing upon the paper. The spacing takes place as above described. A spring 101 returns the bar to its normal position.

As different sized type are used, the

member 110 at the upper end of the hammer 14 is turned so that the proper sized anvil surface is brought into position. At the same time the opening through which the same passed must be changed. To this purpose a band 111 shown in Fig. 6 provided with a pair of different sized openings 112 and 113, is secured to the forward ends of the arms of a bow member 114:, pivotally mounted at 115 and 116 upon a slidable to be placed in holes 123 provided in the frame 118 to p'roperly'position the spacings. When large type are used it will be seen, the opening 112 is brought into position, whie with smaller type the opening 113 is use I have illustrated preferred and satisfac tory formsof-my invention, but it is obviousthat changes may be made therein within the spirit and scope thereof,,as defined in the a pended claims.

I c aim: 1. In a typewriter, a hammer, means for actuating said hammer, changeable means adapted to limit-the movement of saidhammer, said variableposition of said hammer adapted to adjust the operative force of said a hammer actuating means to deliver a variable blow.

2. In a typewriter, a hammer, spring' means for actuating said hammer, changeable meansadapted to limlt the'movement of said hammer, said varlable position of said hammer adapted to adjust the tension of said spring means for actuating said hammer to deliver a variable blow.

3. In a typewriter, a keyboard, a carriage, means for moving said carriage, escape ment means adapted to be moved by said carriage, a hammer, .spring means for actuating said hammer, means connecting said hammer to said escapement means, and freely movable in one direction with respect thereto,'changeable means adapted to limit the movement of said hammer. and. said escapement means, said variable position of said hammer adapted to adjust the tension of said spring means for actuating said hammer, to deliver a variable blow.

4. In a typewriter, a keyboard, a carriage, means for moving said carriage, an escapement wheel adapted to be moved by said carriage, a hammer, spring means for actuating said hammer, a hammer control lever, a pawl on said hammer control lever, an escapement lever adapted to be engaged with and disengaged from said escapement wheel by operation of the keyboard, means ver, and changeable meansadaptcd to limit the movement of said hammer control lever with. said escapement wheel, and the return.

movement of said hammer after striking said variable position of said hammer adapted to adjust'the tenslon of sa d spring means for actuating said her, said pawl adapted to be disengaged from said escapement wheel upon engagement of said escapement lever therewith, to operate the hammer.

5. In a typewriter, a keyboard, a carment wheel, adapted to rotate upon release by said escapement lever, a disk above said hammer control lever rovided with changeable stops, said stops adapted to singly engage said hammer control lever, to limit the movement of said escapement wheel and said hammer after striking, and means for bringing said stops into successive operating position, said pawl adapted to be disengaged from said escapement wheel upon engagement of said escapement lever therewith, to operate the hammer.

6. In a typewriter, a keyboard, a carriage, means for moving said carriage, a hammer, means for actuating said hammer, a hammer control lever, a pawl on said hammer control lever, an escapement lever adapted to be engaged with and disengaged from said escapement wheel by operation of the keyboard, slidable means controlled by said escapement lever, and provided with an arcuate slot therein permanently circumferential to said escapement wheel, said slot being engaged by said pawl, said pawl adapted to be engaged with said escapement wheel upon disengagement of said escapement lever, said wheel adapted to rotate upOn release of said escapement lever,

and changeable means adapted to limit the movement of said hammer control lever with said escapement wheel, said pawl adapted to be disengaged from said escape ment wheel upon engagement of said escapement lever therewith, to operate the hammer.

7. In a typewritena keyboard provided with a spacing bar, a carriage, means for moving said carriage, an escapement wheel adapted to be moved by said carriage, a

aaeaeee hammer, means for actuating-said beer, a hammer control lever, a pawl on sa1d hammer control leveri an escapement lever adapted to be engage with and disengaged from said escapement wheel by operation of the keyboard, means adapted to engage said escapemen't lever, changeable means adapted to limit the movement of said hammer control lever with said escapement wheel, said pawl adapted to be disengaged from said escapement wheel upon engagement of said escapement lever therewith, to operate the hammer, and means operated by said space bar adapted to be projected in the path ofsaid hammer to prevent complete striking movement thereof,

8. In a typewriter of the character described, for variable type, the combination with a hammer having changeable hitting surfaces of varied size, a band having openings of difierent sizes arranged in horizontal alinement, and means for moving said band horizontally to bring the openings into cooperating register with the hitting surfaces of said hammer.

9. In a variable spacing typewriter, a hammer provided with changeable hitting surfaces, of varied size, a shield provided with a plurality of varied sized openings side by side transversely for said hammer, and means for moving said shield transversely to bring said openings into alinement with said hammer.

10. In a typewriter, a traveling carriage, mechanism for efi'ecting the letter-spacing movement of said carriage, a member mounted to turn, and a plurality of stops carried by said member and adjustable individually lengthwise of its axis, said stops being adapted to be (brought selectively into the path of said mechanism to vary the extent of said spacing movement.

In testimony that l claim the foregoing as my invention, ll'have signed my name in presence of two subscribing witnesses.

nnwann KRUSIUS.

Witnesses l). Lnwrs Mamas, Mon WEINBERG.

US11201516A 1916-07-29 1916-07-29 Type-writer. Expired - Lifetime US1243954A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175486A (en) * 1961-05-03 1965-03-30 Ibm High speed print hammer
US3218965A (en) * 1965-04-20 1965-11-23 Sperry Rand Corp Pressure control means for print hammers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175486A (en) * 1961-05-03 1965-03-30 Ibm High speed print hammer
US3218965A (en) * 1965-04-20 1965-11-23 Sperry Rand Corp Pressure control means for print hammers

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