US1270918A - Type-writing machine. - Google Patents

Description

E. E. BARNEY.

TYPE WRITING MACHINE.

APPLICATION FILED NOV. 22. ms.

2 SHEETSSHEET I.

INVENTEIR Patented July 2, 1918.

E. E. BARNEY.

TYPE WRITING MACHINE.

APPLICATION FILED NOV. 22. I916.

Patented July 2, 1918.

2 SHEETS-SHEET 2 m h 2 T I NNklStA III A w x I I I WI Iii i. a a

HIE] ATTIJRNEY till EDWIN E. BARNEY, ILION, NEW YORK, ASSIGNOB TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented rluly 2, lhll.

Application filed November 22, 1916. Serial No. 132,792.

To all whom it may concern:

Be it known that I, EDWIN E. BARNEY, citizen of the United States, and resident of llion, in the county of llerkimer and State of New York, have invented certain new and useful ln'iprovements in Type-Writing Machines, of which the following is a specilication.

lily, invention relates to typewriting machines and more particularly to means for effecting a back-spacing of the carriage.

The main objects of my invention, generally stated, are to provide a highly ellicient and reliable construct-ion of the character specified. f

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and par ticnlarly pointed out in the appended claims.

Tn the accompanying drawings, wherein like reference characters indicate corresponding parts in the different views,

Figure 1 is a fragmentary vertical fore and aftsect-ional view, showing only so much of a typeumiting machine as maybe necessary to arrive at an understanding of my invention in its embodiment therein.

Fig. 2 is a fragmentary detail vertical fore and aft sectional view showing the feed rack and some of the associate parts.

Fig. 3 is a detail. transverse sectional View of a part of the construction, the section being taken on the line of Fig. 8 and looking in the direction of the arrow at said line.

Fig. 4 is a detail transverse sectional view taken on the line g y of Fig. 7 and looking in the direction of the arrow at said line.

Fig. 5 is a detail front face view of the carrier for the back spacing pawl, the part on which said. carrier is mounted being shown in section and detached therefrom. Fig. (3 is a, fragmentary detail rear elevation, with parts broken away, of the escape ment and back spacing mechanism.

Fig. 7 is a fragmentary detail plan view of the same. i

Fig. 8 is an enlarged detail horizontal sectional view taken on the line of Fig. 4 and looking in the direction of the arrow at said line.

Fig. 9 is a detail perspective view of the I In accordance with my present invention I provide an cscapement wheel which is fixed to the escapement wheel shaft, opera tive connections between the escapement wheel and-feed pinion being employed to cause the feed pinion and escapement wheel to turn together during the letter feed movements of the carriage and to enable the feed pinion to be turned in the opposite direction independently of the escapement wheel during the return movements of the carriage. l. have also provided means whereby certain of said intermediate connections may be controlled from a backspacing key so as to effect, when desired, a step-by-stcp back-spacing movement of the feed pinion and of the carriage under control thereof.

The frame of the machine comprises a base 1., corner posts 2 and a top plate A suit-' able power driven carriage (not shown) is mounted above the top plate for movement from side to side of the machine, as usual; the carriage moving from right to left in its letter space movements, under control of the escapement mechanism.

The escapement mechanism comprises a feed rack 4 carried by the carriage and meshing with a feed pinion 5. The feed pinion is fixed to and preferably formed on one end of a sleeve 6, which at its opposite end is formed with a cup-like housing 7. The periphery of the housing is formed with back spacing ratchet teeth 8 so as to constitute, in effect, a back spacing ratchet wheel. Contained within the housing, and pivoted thereto at 9, is a pawl 10. The nose of this pawl is forced into engagement with the teeth of a ratchet wheel 11 by a spring12, secured at one end to the housing, as at 13,

and hearing at its free end against the pawl. The ratchet wheel 11' is secured to the esceive a hardened bushing 16. These bushings bear on the shaft 14, all. portions of the sleeve proper being frec from contact with the shaft. 111 this manner the sleeve is free to turn on the shaft from left to right independently thereof, the pawl 10 and ratchet l1 affording such independent movement of the sleeve in this direction,

The shaft 14 is supported at its ends,

through ball bearings, by arms 17 and 18 of .24 in which bearing balls 25 are arranged,

said balls also cooperating with the bearing orrace-way 26 formed at one end of the shaft 14. The opposite end of the shaft is formed with a corresponding race-way or hearing 27. with which bearing balls 28 of a second set co-act. These balls are arranged ina cooperative race-way29, formed in a screw 30 received and adjustable in a tapped opening in the arm 18. A lock-nut 31 is threaded onto the outer end of the screw and bears against the arm 18 to lock the screw in its adjusted position.

'It will be understood that an adjustment ofthe screw 30 effects a relative adjustment between the ball bearings at the opposite end of the shaft to take up any undue looseness and compensate for any wear that may take place. in the bearings. The arm17 is apertured at 32 and there is a corresponding opening 33 in the screw- 30 at the rear end ofthe shaft.

Endwise' movement of the sleeve6 on the shaft 14 in one direction is prevented by th'e'ratchet wheel 11' which is fixed to the shaft and abuts the sleeve at one end there of. 4 Any appreciable endwise displacement of the sleeve inthe oppositedirection is prevented by the opposite end of the sleeve abutting the arm 17, as indicated in F ig. 8.

Theratchet wheel 11 is provided with an elongated hub or sleeve 34 tapped to receive one or more screws 35; the inner end of each screw. bearing against the shaft 14, thus fixedly connecting the ratchet wheel to the shaft but permitting the removal of the ratchet wheel when desired. The outer surface of the sleeve 34is threaded at 36 for cooperation with the internal threads on a flanged collar'or hub designated as a whole by thereference numeral 37. This collar when screwed home on the sleeve 34 will abut the ratchetwheel 11. A bearing portion 38 is formed on the collar or hub to re ceive the escapement wheel 39 which is apertured centrally so that it may be seated on the part 38 and bear at one side against a. flange 40 formed on the collar or hub. Holes are formed in the escapement wheel for the free passage of headed screws 41, the threaded ends of which engage in tapped openings in the flange 40, thus detachably securing the escapement wheel to the member 37, The hub 37 is apertured for the free passage of the screw or screws 35, the apertures in the hub registering with the tapped openings in the sleeve 34, so that the same screws 35 that secure the part 11-34 on the shaft 14 also fixedly connect the collar 37 and the escapement wheel to the part 1134 and to the shaft 14. It will be understood that the construction of the escapement wheel, and the manner of mounting it, are such that the wheel may be hardened independently of the other parts, and that the various other parts that are subject to wear may be separately hardened. After the parts are assembled, the construction is such as to afford great accuracy and a free running of the parts as well as affording great stability and resist ance to wear. The distant bearing points at the ends of the escapement wheel shaft and the long bearing which the escapement wheel receives on the shaft, are of great ad vantage in controlling the escapement wheel against deflection from its true course.

I have combined with the back spacing ratchet wheel 8, hereinbefore described, a back-spacing pawl 42 which is pivoted at 43 on a back-spacing pawl carrier 44, which is shown in detail in Fig. 5. The pawl 42 is provided with an opening 45 which receives a pin 46 that projects from one side of the pawl carrier and acts as a stop to limit the relative movement between the backspacing pawl and its carrier. The pawl carrier is formed with a key-hole slot 47, the wall 48 of the enlarged portion of the slot forming a pivotal hearing by which the carrier may turn on its support. The contracted portion 49 of the opening or slot enables the carrier 44 to be detachably mounted on its support, as will presently appear. The support for the carrier is designated as a whole by the reference numeral 50, and is shown in detail in Fig. 9 and in cross section in Fig. 5. This supporting member is substantially C-shaped in cross section providing a longitudinal opening or bore 51 therein which is open at one side as at 52. A flange 53 is formed on the member 50, said flange being formed with a peripheral groove 54 in which the carrier is adapted to be seated and mounted for pivotal movement concentrically with the escapement wheel shaft 14 and sleeve (5. The member 50 is provided with tapped openings 55 adapted to receive the threaded ends of headed screws 56 (see Fig. 4) which extend through openings in the escapement bracket 19 and rigidly connect the member emma 50 to said bracket. From an inspection of Fig. 4 it will be seen that the escapement bracket is formed with a curved seat 57 corresponding to the contour of the outer surface of the supporting member 50, and clos ing the opening 52 therein when the support 50 is secured in position on the bracket by the screws 56. From aninspection of Fig. 5 it will be understood that when the support 50 is turned to a position where the opening 52 therein is uppermost, the distance from the upper to the lower edge of the body of the support, within the peripheral groove 54:, corresponds substantially to the width of the contracted portion 49 of the opening in the carrier 44. When the parts are disposed as represented in Fig. 5, the carrier may be introduced onto the bearing in the peripheral groove 54:. After the carrier is thus placed in position, a quarter turn of the bearing member 50 is eliective to bring the larger diameter thereof crosswise of the contractedportion 49 of the opening in the carrier, so as to form a pivotal support for the carrier and prevent its detachment from the member 50. When the part 50 is given the quarter turn in the manner described, it is secured in this position on the escapement bracket by the screws 56,

as represented in Fig. 4:. The construct-ion of the support 50 is such that it may be introduced laterally to the position it is to occupy on its curved seat or hearing 57. When thus positioned, the member 50 partly surrounds the sleeve 6, said sleeve passing freely through the bore 51 in the supporting member without contacting with the latter. lit will be understood that a removal of the screws 56 enables the support 50, with the pawl carrier, to be dismounted from the escapement bracket without dismounting any other part of the escapement mechanism. It will also be understood that the member 50, together with the parts carried thereby, may be readily assembled and mounted in position on the bracket after the escapement has been assembled and mounted in place.

Control of the back-spacing pawl may be afforded by any suitable means. In the present instance I have provided a backspacing key lever 58, suitably fulcrumed as at 59, in the base of the machine, and provided with a key 58*. An upwardly ex tending two-part link 60 is connected at its lower end to the key lever and at its upper end is pivoted at 61 to a crank arm 62. This crank arm projects from a rock shaft 63 supported by bracket arms 64] which depend from the top plate of the machine.

A rearwardly extending crank arm 65 is also provided on the shaft 63, and to this arm is connected an upwardly extending actuat ing link 66, the upper end of which is pivoted at 67 to the back-spacing pawl 42.

This link carries a pin 68 which at the termination of the back-spacing operation coacts with the pawl 42 to lock itin engagement with the teeth of the back-spacing wheel 8, and prevent an overthrow of the carriage during a rapid or violent operation of the back-spacing key. A set screw 69 projects upwardly from a cross bar 70 secured to the base of the machine and co-acts with the back-spacing lever to limit the operating stroke thereof. The back-spacing pawl carrier is limited in its movement back to normal position by a set screw or stop 71 carried by the top plate 01 the machine. This stop cooperates with a lip or stop 72 which is struck up and projects laterally from the pawl carrier 44;. A suitable spring 73, connected atone end to the back-spacing lever 58 and at its opposite end to a suitablyfixed' portion of the machine, is effective to return the back-spacing lever and the parts controlled thereby to normal position.

In the present instance I have provided a simple and effective means for preventing disengagement of the feed rack l from the feed pinion 5 during a back-spacing operation. The means in question comprises a locking member, designated as a whole by the reference numeral 74;. This member has a hook-like portion 75 that is adapted to move from the position represented in Fig. 2 to a position where it is directly over the feed rack 4e and prevents an upward movement of the latter sufiicient to disengage it from the teeth of thefeed pinion. The locking member 7i is carried by a rock shaft 76 mounted at its ends in a bearing bracket 77 secured by screws 7 8 to one of the guide rails 79 for the carriage. A returning spring 80 is coiled around the shaft 76 and is connected at one end, as at 81, to the member 7st, and is connected at its opposite end to the bracket 77. The force of this spring is exerted to move the member 74 from the normal position represented in Fig. 2 to its op orative position where the hook 7 5 extends above the feed rack. 74 is maintained in its normal or released position by a pin 82 which iscarried by and projects laterally from the pawl carrier 44. This pin bears down on a laterally-bent finge'r '83 which projects from the locking device 7 4 and holds the latter in its releasing position against the power of its spring 80. Ali-actuation of the back-spacing mecha nism, however, is efiective to lift the pin 82, so as to enable the locking member to be moved by its spring 80 into locking position before the termination of the back spacing operation and before a disengagement of the feed rack from the pinion could be elfected by such an operation. y

The escapement wheel may be controlled in any suitable manner, as by feed dogs 84 The locking member and 85 carried by adogrocker ,86 controlled rocker at a-iprintin operation is effective.

to afforda let-offofthe escapement wheel, and the powerexerted' by the power driven carriage through the feedrack 4 is effective to turn. the pinionv 5 and sleeve 6. .This will cause the '.escapement wheel to be turned through the intermediate. pawl 10 and ratchet .11, sov that at this time the escapement wheel, sleeve 6, feed pinion 5 and shaft 14:,turntogether. A return movement of the carriage, while the rack 4; is in engagement with the pinion, is effective toturn the sleeve 6 on the .shaft 14: independently of said shaft and the escapement wheel. carried thereby; the pawl 10,-and ratchet -.w heel;1l affording this independent 4 movement between the sleeveo and escapement wheel, and shaft. An actuation of the back-spacing key is; effective. to actuate the back-spacing pawl, first bringing it into engagement with the back-spacing ratchet wheel 8 and then moving the pawl 42, its carrier 45f, and the backspacing ratchet wheel together. The effect of this movement is to turn the sleeve 6, and the. pinion carried thereby, from left to right, causingthe feed rack a and the carriage to be shifted a letter space to the right.

In this back-spacing operation the sleeve 6, back-spacing wheel 8, and pinion 5 turn independently .of the shaft. 14 and the escapementwheel. t

Various changes may be made without departing from the. spirit of my invention.

hat I claim asnew and desire to secure by Letters Patent, is 7 1-. In a typewriting machine, the combination of a back-spacing pawl-carrier formed with a bearing opening and a slot extending from said opening, toflthe edge of the carrier, said slot being narrower than the diameterof the bearing opening, and asup porting member received through said slot into the bearing opening and on which said carrier receives a pivotal bearing and from which it is detachable.

.2. In a typewriting machine, the combination of a back-spacing pawl-carrier formed with a key hole slot therein, the largerjportionof said slot forminga bearing opening, and a support having a bearing which is of larger diameter in one direction than another and when turned to one position relatively to the carrier. may be introduced into said bearing opening and when turned to another position relatively to the carrier prevents a detachment of the carrier from its support and provides a pivotal bearing therefor. 7

3. .In atypewriting machine, the combination of a backspacing pawl-carrier formed with akey hole slot therein, the larger portion of said slot forming a bearing opening, and a support having a peripheral hearing groove therein, one side of the support at the bearing portion thereof being cut away to permit the support at its bearing portion to be introduced into the keyhole slot in the carrier and provide a bearing for the carrier.

4:, In a typewriting machine, the combination of a back-spacing pawl-carrier formed with a keyhole slot therein. the larger portion of said slot forming a bearing opening, and a support having a bearing portion that is substantially C-shaped in cross section and is adapted when turned to one position relatively to said carrier to be introduced laterally through said keyhole slot and form a bearingfor the carrier.

In a typewriting machine, the combination of a back-spacing pawl-carrier formed with a keyhole slot therein, the portion of said slot forming a bearing opening, a support having a bearing portion that is substantially C-shaped in cross-section and is adaptedwhen turned to one position relatively to said carrier to be introduced laterally through said keyhole slot and form a bearingfor the carrier, and an escapenient wheel shaft that extends through the bore of the C-shaped support and is supported independently of said support, whereby the support may be dismounted indepemlently of said shaft.

6. In a typewriting machine, the combination of an escapement-wheel shaft. a backspacing wheel mounted on said shaft, a backspacing pawl, a pivoted carrier therefor, and a support for said carrier, said support partly surrounding said shaft and being detachable independently thereof.

,7. In a typewriting machine, the combination of an escapement-wheel shaft, a hackspa'cing wheel mounted on said shaft, a back-spacing pawl, a pivoted carrier therefor, and a support for said carrier and on which the carrier is detachably pivoted, said support partly surrounding said shaft but free from contact therewith and being dctaehable with said carrier independently of the shaft.

8. In a typewriting machine, the combination of an eseapement-wheel. shaft, a backspacing wheel mounted thereon, a backspacing pawl, a carrier for said pawl mounted for pivotal movement concentrically of said shaft, and a pivot bearing for said carrier which partly surrounds said shaft and is supported independently thereof and out of contact therewith.

,9. Ina typewriting machine, the combi nation of w an escapement-wheel shaft, a sleeve which is adapted to turn on said shaft independently thereof in one direction, a

feed pinion fixed to said sleeve, a backspacing Wheel also fixed to said sleeve, a backspacing pawl, a carrier for said pawl mounted concentrically to said shaft, and a pivotal bearing for said carrier which partly surrounds said shaft and sleeve and is supported independently thereof and out of Contact therewith.

10. In a typewriting machine, the combination of an escapement-wheel shaft, a bracket therefor, a back-spacing wheel mounted on said shaft, a back-spacing pawl, a carrier for said pawl mounted for pivotal movement concentrically to said shaft, and a pivotal bearing support for said carrier separate and distinct from said bracket and detachable independently of the bracket and shaft.

11. In a typewriting machine, the combination of an escapement-wheel shaft, a bracket therefor, a back-spacing wheel mounted on said shaft, a back-spacing pawl, a carrier for said pawl mounted for pivotal movement concentrically-Ito said shaft, a

' pivotal bearing support for said carrier separate and distinct from said bracket and detachable independently of the bracket and shaft, and means by which the carrier is de tachably mounted on its pivot bearing.

12. In a typewriting machine, the combination of an esoapement-wheel shaft, a bracket therefor, a back-spacing Wheel mounted on said shaft, a back-spacing pawl, a carrier for said pawl mounted for pivotal movement concentrically to said shaft, a pivotal bearing support for said carrier separate and distinct from said bracket and detachable independently of the bracket and shaft, and means by which the carrier is detachably mounted on its pivot bearing, said means comprising a keyhole bearing formed in the carrier and a bearing portion formed on the support which is substantially C- shaped in cross-section and may be inserted laterally in the keyhole bearing when turned to one position relatively thereto.

Signed at Ilion, in the county of Herkimer and State of New York, this th day of November, A. D. 1916.

EDWIN E. BARNEY.

Witnesses:

G. B. BRAND, GHAs. E. MAURIOE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

ashington, D, If.

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