US1376922A - Typewriting-machine - Google Patents

Description

THOMAS MERCER COPELAND, O EDENDALE, AUCKLANI), NEW ZEALAND.

TYPEWRITING-MACHINE.

Specification lof Letters Patent.

Patented May 3, 1921.

Application led September 23, 1919. Serial 110.325,675.

To all whom t may concern:

kBe it known that l', THOMAS MERCER COPELAND, a citizen of the Dominion of New Zealand, and residing at La Calgary street, Edendale, Auckland, in the Provincial District of Auckland, New Zealand, a subject of the King ci Great Britain and Ireland, have invented certain new and useful Improvements in Typewriting Machines, of which the-following is a specification.

This invention relates to typewriting machines and provides improvements whereby the number of words and the number of folios typed are automatically recorded.

The invention consists in providing a typewriting machine with specially designed counting mechanism for registering the number of words typed, and in connecting the counting mechanism with the space bar in such a way that the operation of the latter after each `word is typed, lautomatically causes the counting mechanism to register.

For the convenience of the operator, cut out means are provided, the manipulation of which renders the counting mechanism inoperative, when it is not desired to count words.

The apparatus comprises a counter mounted on the front of the machine and having -an aperture for showing the number of `counter for rendering lthe mechanism of same inoperative, in addition to which the connecting bar can also be rendered inoperative when required.

Referring to the drawing in conjunction with which the invention will be more particularly described Figure 1 is aside elevation of a typewriter fitted with the invention.

Fig. 2 is an enlarged front view of the counter.

, Fig. 3 illustrates the unit and iolio dials (shown broken) l Fig. 4 is an enlarged elevation of the working partsof the counter set at zero.

Fig. 5 is an enlarged plan view of the counter with the top removed. v

Fi 6 is an enlarged detail view oi' the adjustaile connecting bar.

.Figs 7 and`8 are enlarged Yfront andside news respectively ci' a modified connecting In carrying out the invention the machine l is constructed with a ycounter 2 which is mounted on the front of the machine, preferably at one side thereof.

The face of the counter 2 has two apertures 3, 11 (F ig. 2) behind which are rotated geared dials 5, 6, the dial 5 being marked with numerals adapted to show one at atime through the unit aperture 3, and the dial with numerals adapted to show one at a time through the folio aperture 1.

The numerals of the unit dial 5 run up to the number corresponding to the number of words comprising a folio, and a complete revolution of the unit dial 5 must take place, before a number of the dial 6 can be brought into view through the folio aperture 4L, and before the number showing through said aperture 4 can be changed.

The dials 5, 6 are mounted on spindles 7, 8 respectively, the spindle 7 also carrying a ratchet wheel 9 on which are the same numberof teeth as there are numerals on the dial 5.

A pinion 10 on the spindle 7 gears with a toothediwheel 11l on a spindle 12 carrying a pinion 13 which in turn gears with a toothed wheel 1li on the spindle 8 of the dial 6.

Also on the spindle 8 is a clcck spring 15 the inner endoic Awhich is secured to the spindle 8 and the other end to the casing of thecounter.

An operating pawl 15 is pivoted on one end of a iulcrumed arm 16,; and' is kept normally pressed against the teeth of the ratchet wheel 9 by a spring 17, the other end of the arm 16 being connected to an adjustable bar 18, operated from the tracker 19 of the space bar 20.

A spring 21 keeps the end ot' the arm 16 attached tothe connecting bar 18, normally raised, and the operating pawl 15 normally down.

The pawll is adapted to engage in turn each tooth of the ratchet wheel 9, and move the latter a distanceequal to the pitch of its teeth, which is suiiicient to cause a change of numerals viewed through the unit aperture 3.

A second pawl 22 on a spindley 23 and having a knurled nut 24 on its upper end outside the counter is kept pressed against Crt the teeth of the ratchet wheel 9, and prevents reverse motion being imparted to the wheel 9 during upward movement of the pawl 15. Also should the latter be moved too far upward, it is caused owing to the shape of its face 25 to ride on the pawl 22, clear of the teeth of the wheel 9, so prevent the latter wheel being given greater movement than required, by the pawl 15 missing teeth.

Arms 26, 27Y1nounted on a spindle 26 are adapted, by the iniiuence of a spring 29 to simultaneously engage stops 30, 31 on the wheels 9 and 14 respectively when the counter is run back to Zero.

To retain the pawl 15 out of engagement with the teethv of the ratchet wheel 9 when desired a small lever 32 with a knurled nut 33 on its lower end outside the counter is pivoted within the latter.

TheV portion of the lever 32 beyond its pivot worlrs against a flat spring 34 in which are two indentations 35, 36. When the lever 32 is in the indentation 35 the pawl 15 is permitted to engage the teeth of the ratchet wheel 9, but when said lever 32 is in the indentation 36 its inner end forces and holds the pawl 15 clear of the teeth of the ratchet wheel 9.

rlhe connecting bar 13 (Fig. 6) is in two parts, the upper `part being pivotally connected to the arm 16, and having a projection 37 through which the lower threaded portion passes. Nuts 38 working on the lower threaded portion above and below the projection 37 provide means whereby the length of the bar can be adjusted to suit circumstances.

The lower end of the bar 18 is slotted at 39, and is split, whereby it can be sprung lover the tracker 19 of the space bar 20.

yl`he connecting barillustrated in Figs. 7 and 8 besides being adjustable in regard to length is provided with means, whereby the counting of words can be omittedl when desired without disconnecting any of the parts.

T he lower portion 40 ofthe bar is .formed and connected to the tracker 19 as before, and has a slotted plate 41 at its upper end.

A square block 42 worlrs on the lower threaded end of the upper portion 43, said block 42 being entered in the slot 44 of the plate 41.

f1 lever 45 centrally pivoted to the plate 41 is provided at its ends with off and on press buttons 46 and with a central twin shaped guide 47 engaging the block 42.

When the block 42 is in the horizontal portion of the slot 44 movement imparted to the lower portion 40 is transmittedto the upper portion 43. On depressing the left hand or olf button 46, the block 42 is thrown into the vertical portion of the slot V44, and said vertical portion of the slot being` of a length equal to or greater than the movement of the bar, the lower portion .40

is capable of being operated without transmitting movement to the upper portion 43.

@n depressing the right hand or on button 46, the bloclr 42 is returned to the horizontal portion of the slot 44, whereupon Ythe connecting` bar is operable as a whole.

ln practice each depression of the bar 20 Vand tracker 19 to provide a space after each .the dial 6shows through the folio aperture 4, and also before a change of folio numbers takes place.

The counting continues automatically, the aperture 4 showing the number of completed folios, and the aperture 3, the number of words forming part of the foliol in course of compilation. Y

Should it be desired to omit counting temporarily or otherwise the counting mechanism can be rendered inoperative by pressing the knurled nut 33 on the lever 32 in the direction indicated., and causing the pawl 15 to be held clear of the ratchet wheel 9, or where the form of connecting bar as shown in Figs. 7 and 3 is used by depressing the left hand or off 7 button 46.

rlhe wheel 9 is capable of the same number of revolutions as there are folios capable of being recordedthe wheel 14 and dial 6 however being capable of only one complete revolution. Y

During counting operations the arm 26 is held clear of the stop 30 by the spring 29.

When it is necessary to re-set the countmechanism to zero, the knurled nut 24 is `pushed in the direction indicated, which operation causes both pawls 15 and 22 to clear the teeth of the wheel 9,'whereupon the clock spring 15a causes the wheelsL and dials to be run back. 0n zero being reached, the stop 31 automatically engages the arm 27 and causes the arm 26 to be depressed and engage the zero stop 30 Von the wheel 9, and the machine is again in readiness to commence recording.

What l claim and desire to secure by Letters Patent of the United States is 1. A counter for typewriters including a casing, unit and folio dials rotatably mounted therein, gearing between the dials, a clock spring connected with the axis of the folio dial, a ratchet wheel connected so as to move with the unit dial, an arm fulcrumed in the casing and having one end connected with the space bar and tracker of the typewriter, a spring controlled operating pawl pivoted on the other end of the arm and engaging the ratchet wheel, a second spring pawl engaging the teeth of the ratchet wheel and projecting exteriorly of the casing and a cut out device for rendering counter inoperative.

2. A counter as claimed in claim l wherein coacting stop means is provided in the casing and on the dials for holding the dials at Zero subsequent to the operation of the cut-out device.

3. A counter as claimed in claim l wherein the second mentioned spring pawl is arranged above the operating pawl and provided with an inclined lower face, and the operating pawl is formed with an inclined upper face for riding engagement with the correspondingly inclined lower face of the spring pawl so as to prevent the ratchet wheel being given greater movement than required by the operating pawl missing the teeth.

ln testimony whereof I aiX my signature in presence of two witnesses.

THOMAS MERCER COPELAND.

lVitnesses WILLIAM PINGHIIS, DORIS ELLEN RAPSAN.

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