US878846A - Type-writing machine. - Google Patents

Description

'No'. 878,846. PATENTED- FEB. 11, 1908.

H. R. WHITE. TYPE WRITING MACHINE.

APPLICATION FILED NOV. 1. 1906.

WITNESSES: KINVENTDR= HIS-ATTORNEY."

UNITED ST T-Es PATENT OFFICE.

HERBERT R. WHITE, OF LOWELL, MASSACHUSETTS, AssIeNoR To WYOKOFF, SEAMANS &'

' BENEDIoT, 0E ITJION, NEW YORK, A coRPoRATmN OF NEW YORK. a

, TYPE- RITING -MAGIIINE.

Specification of Letters Patent.

Patented Feb. if, 1908.

To all whom it may concern: a

Be it known that. HERBERT R. WHITE, a

citizen of the United States, and resident of Lowell, in the county of Middlesexand State" 'of Massachusetts, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification,

/ -My invention relates to typewriting machines and more particularly to means for effecting a fractional line spacing of the platen.

One object of my invention is to provide a simple and efficient. fractional line s acing device that can be readily applied to di erent styles of typewri-tin'g machines.

A further object of my'inven'tion is to pro,- vide a fractional line spacing device erson- 'larly adapted for positioning the platen so as to write just abovelor just below. a line as .when an operator is writing. exponents or fractions; t To the above and other ends which will hereinafter appear, my invention consists in Y the features of construction, arrangementspf arts and combinations of devices set forth 1n the following specification andparticularly pointed out in the claims.

In the drawings, Figure 1 is atop plan view showing the platen frame and laten of a No. 6 Remington ty ewriting mac ine with myattachments or. evices applied thereto. Fig 2 is a left-hand endview of the same with the finger wheel sectioned away. Fig.

3 is a fragmentary front elevationshowing the parts at the left-hand end portion of the platen. Fig.4 is a detail perspective view of a guide plate to be hereinafter more fully described.

"other styles of typewriting machlnes. The rectangular platen .frame is made up of end bars 1, a, rear cross bar 2 and a front cross-bar 3. The laten '4 is mountedon a platen shaft the. laten frame.

' thereof is theusual line spacing ratchet wheel 5 journa ed in bearin s inthe end bars 1 of he shaft carries the usua finger wheels 6 at the ends thereof. Secured to theplaten at the right-hand end 7 withwhich a line spacin pawl 8 cooperates, said pawl being actuated y the usual means, such as those employed, .for instance, in a No. 6.. Remington typewriting machine. A

detent roller 9 is carried at the free end of a leaf spring 10 secured at its rear end to the platen frame. The detent roller bearsin the usual manner against the teeth of the line spacing 'wheel and tends to position the V aten at .the regular line spacing positions y pressing between the teeth of the ratchet.

wheel.

, In addition to the usual linespacin me'ch-' anismprovided atthe rightshand on of the platen, 'I employ a toothed wheel 11 which 1s secured'to the platen at the'left-hand end 1 these slots opening into the other, as clearly shown in Fig. 4..

The slot 16 is in the nature of a notch in one wallof the slot 15. The slot 15 is formed inpart by striking up ears or lugs 17 from the body of the metal from which the guide plate is formed; These ears are tapped to receive screw stops18 for purposes which will hereinafter appear. A so-called carrier or sleeve 19 surrounds .the platen shaft and isreceived betweenfit'he wheel 11,and a sleeve or collar 20 secured to the platen shaft by a set screw 21 whic'hpasses into a threaded opening in the collar 20 and bears at its inner end against the platen shaft. Thecarrier 19 is loosely mounted on the laten shaft so that it is free to rotate aroun the aXis of theplaten as a center. -A.pawl.or engaging member 22 is pivoted at 23 to the carrier '19 to move around its pivot 23 in the general direction of the length of theplaten; This pawl has an. engaging nose or face 24*"whioh is adapted tobe received inthe s aces between .theiteeth 12 of the wheel 11' y swinging'the pawl or engaging member to theright'. The upper end 25 of the pawl constitutes a finger piece by which the. pawl may be. manipulated. The pawl or engaging member 22 passes through the opening in the guide plate formed by the slots 15and 16 and the construct'ion and arrangement of. 'thearts is. such that when the pawl 1s contains with n the slot .16.

the slot 16 it is centered between the two screw stops 18 and is out of engagement with the teeth of the wheel 11, as shown in Figs. l and 3. When, however, the pawl is moved to the right and is in engagement with the teeth of the wheel 11 the pawl is situated in the slot 15 which extends at right angles to If at this time the pawl is given a movement in either direction atright angles to the plane of its movement which carries it into engagement with the teeth of the wheel then the wheel 11-, and the platen which is connected therewith, will be given a rotation for a predetermined distance, the extent of rotation depending on the adjustment of the screw stops 18. The teeth 12 of the wheel 11 are referabl y of the same number as the-teeth of t 1e line spacing ratchet wheel 7and the relative arrangement between the twosets of teeth and the pawl 22 is such that when the detent roller 9 is properly seated between two teeth of the line spacing ratchet wheel, an

opening between two of the teeth 12 will be brought opposite the engaging portion 24 of the pawl 22, as shown in Fig. 1 so that a move ment of the pawl to the right will bring it into engagement between two teeth of the wheel 1 1 and a rotary movement of the pawl, either backward'or forward, will produce a fractional spacing ofthe platen less than the distance between two teeth of the line spacing ratchet wheel 7 in order to move the platenso that a character may be writtenabov'e or below a line determined by the teeth of the line spac; ing ratchet wheel 7, and its spring detent. 9. Thus ifthe pawl is turned towards the rear of the machine writing may be produced below the line, whereas if the engaging device or pawl 22 is turned forwardly to effect a slight backward rotation of the platen then I 'an exponent degree mark or other character may be written above the line. I VYhen the laten is moved by what I havetermed the ractional. line spacing mechanism, either backwardly or forwardly against the pressure of the spring detent, it is held by the operator in this position until the character or character s to-appear above or below 'the line are written, when pressure upon the member 22 is released and'the spring detent 910 will restore the platen to its regular printing line position from which'it was moved by the fractionalline spacing device. In thisposition the member 22 will be brought opposite the slot 16, and it may be moved into said slot to ellcct a. disengagement 'of said memher from the toothed wheel I 11 when the platen is free to be operated in the usual man ncr by the regular lino spacing mechanism. .l t will hv understood that an adjustment of thesrrew stops 18 will regulate the extent of lnwlwxard or forward movement of the platen through an actuation of the pawl 22, and that the positions of said screw steps may be varied according to the work to be produced osition the 1 or writing a erases or the distanceabove and below a line where itis desired to have the characters appear.

It will be understood that when the'pawl 22 is contained within the slot 15 and is at either side of the slot 16 it cannot be disengaged from the teeth of the wheel 11 until the platen is restored to its regular printing line position where the pawl 22 will be oppositethe slot 16.

From the foregoingdescription'it will be seen that the pawl or en aging member 22 has two movements in p anes which are at right angles to each other, one bein a rotary movement around the axis of the p aten and the other being a movement around 'its pivot 23in the general direction of the length of the platen.

It will also simple and eflicient device that may be readily applied to difierent styles of typewriting machines and which is operative to properly ove and below a line of writing. Various changes'may be made without departing from, the spirit and scope of my invention.

fWhat I claim as new and desire to secure by Letters Patent, is

, 1. In a typewriting machine, the combination of a platen, line spacing mechanism, and

means for writing above and below a line determined by said linev spacing mechanism, said means comprising a toothed'wheel connected with the platen, and a hand actuated pawl cooperative with said toothed wheel to turn it in. either direction a predetermined extent. v

2. In a typewriting machine, the combination ofa platen, line spacing mechanism, means for writingabove and below a line determined by said line spacing mechanism,

platen with mechanical accuracy said means comprising a toothed wheel connected with the platen, and a hand actuated pawl cooperative. with said toothed wheel to turn it in'either direction a predetermined extent; and means for centering said pawl when it is out of engagement with said toothed wheel.

3. In a typewriting machine, the combination of a platen, line spacing mechanism, and

means forwriting above or below a line de termined bysaid' line spacing mechanism, said means comprising a toothed'wheel connected with the platen, a hand actuated pawl cooperative with said toothed wheel to turn it' a predetermined extent, and adjustable means for determining the extent to which the wheel may be turnedby said pawl.

4. In a typewriting machine, the combination of a platen, line spacing mechanism, and

means for writing above and below a line determined by said line spacing mechanism, said means comprising a toothed wheel connected with the platen, a hand actuated pawl cooperative with said toothed whee to turn it in either direction a predetermined extent,

and adjustable means for determining the.

extent to which the wheel maybe turned by said pawl.

5. Ina typewriting machine, the combination of a platen, line spacing mechanism,'and means for writing above and below a line determined ,by said line spacing mechanism,

said means comprising a toothed wheel connected with the platen, a carrier pivoted to turn around the axis of the platen a predetermined extent, and a pawl pivoted to said carrier and adapted to be throwninto and out of engagement with said toothed wheel and to turn the carrier, toothed wheel and platen a predeterminedextent in either direotion. I

,6. In a typewriting machine, the combination of a platen, line spacing mechanism, and

' engaging device pivoted to means for writing above or below a line determined by said line spacing mechanism,

said means comprising a toothed wheelc'on nected with the platen, a carrier pivoted to turn around the axis of the platen a predetermined extent,'a. pawl pivoted to said carrier and adapted to be thrown into and out of engagement with said toothed wheel and to turn the carrier, toothed wheel and platen. a

predetermined extent, and a fixed guide in whichsaid pawl works.

7. In a typewritingmachine, the con1bination of a platen, line spacing mechanism, and means for writing above or belowa line determined by said line spacing mechanism, said means comprising a fixed guide, and an move in said guide in planes at right'angles to each other, the movement of said engaging device in one plane carrying the device into and out of cooperative relation with the laten and the movement of saiddevice in t e other plane causing a rotation of the platen for a predetermined extent.

8. lnatypewnting machine, the combination of'a platen, line spacing mechanism, and

means for Writing above or below a line desaid means comprising a'iix termined by said line spacing mechanism, said means comprising a fixed guide with slots therein at right angles to each other,

and a hand actuated engaging deviceworkingin said slots.

9. In a typewriting machine, the combina tion, at a'platen, line spacing mechanism, and

nieans'for writing above or below a line determined by said line spacing mechanism,

slots therein at right angles to each other, and a hand actuated engaging device workingin said slots, the movement of the engaging device in one slotcarrying the device into and out of operative engagement with the platen and out of and into said last mentioned slot and the movement of the engaging device 'in the other slot determining the explaten and having the same as the line spacing ratchet wheel, an engag-;

ed guide with tent of rotation which maybe given the platen by said device.

10. In a typewriting machine, the coinmbination of a platen, a line spacing ratchet wheel, line spacing means cooperating therewith, a toothed wheel connected with the platen and having the same number of teeth as theline spacing ratchet wheel, and an en gaging device operative to engage the toothed wheel and to 'move the platen through a predetermined extent in either direction.

11. In a typewriting machine, the combination of a platen, a line spacing ratchet wheel, line spacing means cooperating therewith, a toothed wheel connected with the number of teeth at right angles to each other, the movement of said device in one plane carrying the device into or out of engagement with said toothed wheel, and the movement of said device in the other plane turning the platen through said toothed wheel a predetermined extent in either direction.

13. In a typewriting machine, the com bination of-a' platen, a line spacing ratchet wheel, line spacing means cooperating therewith, a wheel connected with the platen and having the same number of teeth as the line spacing ratchet wheel, an engaging device pivoted to turn in two planes at right angles to each other, the movement of said device.

in oneplane carrying the device into or out of engagement with said toothed wheel, and

the movement of said device in the other plane turning the platen through said toothed wheel a predetermined extent, and adjustable means for limiting'the movement of the.

engaging device in the last mentioned plane. 14.:In a typewriting machine,'the combination of a platen, line spacing mechanism, and means independentiof the line spacing mechanism for turning the platen, said means comprising a toothed wheel, and an engaging device which is moved in one direction by hand into and out of engagement with said toothed wheel and which turns the toothed wheel and platen a predetermined dist nceat each operation.

15. In a typewriting machine, the combination of a platen; line spacing mechanism comprising a line spacing ratchet wheel, and a cooperative line spacing device; and fractional spacing means independent of the line spacing mechanism for writing above and below a line determined by said line spacing mechanism, said fractional spacing mechanism comprising a toothed wheel connected with the platen, and an engaging device movable by hand in twoplanes, the movement of the engagingdevice in one plane carrying it into and out of engagement with said toothed wheel and, the movement of the engaging device in the other plane turning the platen in either direction a predetermined extent to write above or below the line 7 determined: by the line spacing mechanism.

16.-'In a typewritirig machine,'the ,combination of a platen, line spacing mechanism comprising a 'ne spacingratchet. wheel and a coolperativelinespaolng device, and fractiona spacing'means independent of the line spacing mechanism for Writing above and below a line determined by said line spacing mechanism, said fractional spacing mechanism comprising a toothed Wheel connected with the platen, an engaging device pivoted to move longitudinally of the platen and around-the aiiis thereof, a slotted guide in which: said engaging device moves, the movement of the engaging device longitudinally of the platen carrying it into and out of coninth'day of October A. D. 1906.

HERBERT R. WHITE. Witnesses:

FRANK L. WEAVER, H. B. HOYLE.

operation with said toothed whe'eland the

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