US2285086A - Typewriting machine - Google Patents

Description

June 2, 1942. e. F. HANDLEY TYPEWRITING MACHiNE 2 Sheets-Sheet 2 Filed Jan. 3, 1941 6607298 FHand/ey KM V Patented June 2, 1942 irai 5 TYPEWRITING MACHINE George F. Handley, Glendale, N. Y., assignor to Royal Typewriter Company, 1110., New York, N. Y., a corporation of New York Application January 3, 1941, Serial No. 373,023.

6 Claims. (01. 197-135) disclosed, for example, in the patent to Lewis G.

Myers, No. 1,243,858, granted October 23, 1917.

In the typing of such stencil cards it frequently is desirable to make ink type'impressions on the top part of the marginal card frame for filing purposes, and then to make the stencil impressions on the thin stencil paper. The first stenciled line on the thin paper may be spaced be low the inked typing on the top of the card frame a relatively large amount, as compared to the spacing between successive lines of stencil impressions on the stencil paper, is desirable for convenience and speedy operatiori that the line-spacing mechanism advance the card holder and card a relatively large amount in response to the first operation of the usual line-spacing lever, and then automatically advance the card relatively small amounts in response to succeeding individual movements of the line-spacing lever.

An object of the present invention is to provide a'pape'r or card positioning means and as- Consequently, it .2

adapted to be initially conditioned for effecting a maximum line-spacing upon an initial operation of the line-spacing lever, and to be automatically conditioned by the first large linespacing operation for elfecting a minimum linespacing movement upon the next operation of the lever, or manually conditioned to effect an intermediateline spacing upon said next lever operation. r

A further object is to provide a-novel arrangement and construction of typewriter carriage and stencil card holder such that the parts may be compactly assembled without undesirably limiting the extent of line-spacing movement which can be imparted to the card;

Other objects will become apparent from a reading of the following detailed description, the appended claims, andthe accompanying draw ings, in which:

Figure 1 is a front elevation of a typewriter carriage, only some standard parts of which are shown, and which is equipped with mechanism embodying the invention; a Figure 2 is a fragmentary end elevation looking in the direction of the arrow II in Figure 1 andwith some parts shown, insection, the parts being in the relative positions occupied before 7 a stencil card has been inserted in the machine;

sociatedline-spacing mechanism of the character referred to in which the control of the linespacing means for automatically varying the amount of line spacing following the initial operation of the line-spacing lever is eiiicient and dependably accurate in operation.

' In the typing-of stencil cards, it; may be desirable to linespace the card two or three units or increments after typing on the top of the card frame, and usually it is desirable to space suc-- cessive lines of stencil impressions 'on the stencil paper by only a single linespace' unit or increment. In some instances, however, it may be desirable to separate successive lines of stencil impressions by more than a single line-spacing 1 increment or unit but by less than the space between the line of inked impressions on the top of the'card; frame and the first line of stencil impressions; cordingly is to provide line-spacing mechanism Another object of the invention 'ac- Figure 3 is a view similar to Figure 2 but with 3 some parts omitted and other parts shown in positions differentfrom those shown in Figure 2;

Figure 4 isasectionon the line 3- 8 of Figure 1; V

Figure 5 is a section on the line 5-5 of Figure 4; s

Figure 6 is a transverse, vertical, sectional .:view of some parts of the line-spacing mechanism, showing the parts in the positions occupied when a stencil card has ben inserted in the machine and is positioned for receiving the first 'line of typing, the parts being conditioned for automatically effecting a maximum line-spacing upon the operation of th line-spacinglever fol lowing the typing of the line of inked impressions; V

Figure 7 is a sectional view similar to Figure 6 but showing the parts in the positions occupied after the first operating stroke of the linespacing lever subsequent to the forming of a line ofinked typing impressions on the top of the stencil card frame, the stencil sheet being positioned to receive the first line of stencil impressions'and the parts being conditioned to effect a minimum line-spacing upon the next operation of the line-spacing lever;

ing a line of inked typing on the top of the card frame and three lines of stencil impressions on the stencil sheet, the first line of stencil impressions being spaced a maximum line-spacing below the line of inked impressions, and the succeeding lines of stencil impressions being spaced from each other by a minimum line-spacing; and

Figure 10 is a view similar to Figure 9 but showing two lines of stencil impressions on the stencil sheet spaced from each other by intermediate line-spacing.

Equipment embodying the invention is illustrated as being mounted upon a carriage A including a bottom frame or base rail I supported for longitudinal travel on a fixed or stationary rail B which may be supported upon a typewriter main frame (not shown). The carriage includes the usual end plates 22, and in the' present instance these are connected by a cross bar 3. A platen shaft 4 journaled in the end plates supports a platen 5 for rotating or rocking movements, the platen being provided with the usual finger knobs 66. A type bar C is adapted to be moved up into printing or stenciling position in front of the platen in the usual manner.

The equipment includes a card holder frame adapted to position a card D in cooperative relation to the platen 5 so as to provide for the typing of inked impressions upon the top D of the card frame and for stencil impressions on the stencil sheet or paper D carried by the card frame D The card holder frame includes two spaced arouate and vertically extending guides 1| connected at their bottoms by a cross piece 8 secured to the carriage rail I as at 9-9. At their tops. the guides l-1 are provided, respectively, with brackets Ill-4B. generally designated II and in the form of an inverted U comprises vertically extending arcuate legs l2l2 and a top cross piece l3. Each leg l2 includes inner and outer portions l2 and 12 respectively, joined at their bottoms and open at their tops to provide for the insertion of the card D. The inner legs l2 are formed with rack teeth which mesh with gears H! on and rotatable with the platen. When the platen is rocked, the

A card holder l8, the card D will be positioned for receiving the last line of stenciled impressions.

Inked ribbon may be presented in front of the printing line in the usual'manner to provide for the formation of inked typing impressions on the top of the card frame D The equipment for presenting the inked ribbon at the printing line is not shown, and it may be of any suitable or known kind. In order to make the stenciled characters clearly perceptible to the operator, an ink ribbon R is arranged to cover the platen behind the stencil sheet, so that the ink from the ribbon R will show through the punctures in the sheet made by the type during the stenciling operation. For positioning and supplying the ribbon R, a ribbon roll frame comprising side plates l9|3 is secured to the cross bar 3 and is connected to the guides 1-1 by means of brace members 23 which are secured to the plates Ill-I9 as at 2!, and are secured to the brackets I0Ifl as at 22. The ribbon R is led from a supply roll 23 journaled on the side plates Ill-I9 under and thence up in front of the platen and rearwardly to a take-up roll 24 adapted to be driven'through a one-way drive connection (not shown) by a friction wheel 25 engaging the platen 5. The construction referred to in the foregoing description is generally similar to that disclosed in the patent to L. C. Myers, No. 1,243,858, and does not per se constitute the present invention. The invention relates to other parts to be described, and combinations of such other parts with each other and with parts which already have been described.

In accordance with the invention, novel and improved line-spacing mechanism and control means therefor is provided for automatically and variably controlling the amount of line-spacing between lines of inked impressions and stencil impressions. In the illustrative embodiment, a ratchet wheel 23 is connected to the platen 5 to rotate or rock therewith. A rock arm 21, having its pivot coaxial with the platen, carries a pawl 28 pivoted on the arm as at 29 and having to the pawl as at 32 and to the rock arm 21 as gears I4 will drive the toothed inner legs l2? upwardly or downwardly, depending upon the direction of rocking of the platen, so as to linespace the card D carried by the card holder H. A finger piece I5 secured to the platen is formed with stop lugs l6 and II respectively engageable with a stop pin l8 secured to the right-hand carriage end plate 2. The arrangement is such as to limit the rocking of the platen, and consequently limit the up and down movement of the card holder l I. When the card holder is in its lowermost position with the stop lug It in engagement with the stop pin l8, as shown in Figure 3, the top of the card frame D will be positioned at the printing line. as shown in Figure 1. When the platen is rocked in a clockwise direction as viewed in Figure 3 until the parts reach the position shown in Figure 2, with the stop lug I! in engagement with the stop pin at 33 constantly urges the pawlnose 30 toward engagement with the ratchet wheel For operat- 1 ing the rock arm 27 and pawl 28 to rock the ratchet wheel 26 and platen 5, a combined carriage return and line-spacing lever 34 is pivoted as at 35 on a shelf 35 extending outwardly from the left-hand end plate 2. The lever 34 is urged in a counterclockwise direction, as viewed from above, by means of a restoring spring which is not shown but which is connected to the lever 34 and shelf 36 in a known manner. Movement of the lever 34 under the urge of its restoring spring (not shown) is limited by a stop 3! carried by the end plate shelf 36. A link 38 is pivoted to the lever 34 as at 39, and is pivoted to the rock arm 2! as at 40, the arrangement being such that, when the lever 34 is rocked in a counterclockwise direction as viewed from above, the arm 21 may be rocked in a clockwise direction as viewed in Figures 4, 6, '7, and 8. Rocking of the arm 21 for line-spacing and carriage return is limited by engagement of the pawl 28 with a stop pin 4! secured to the left-hand end plate 2.

For assuring step-by-step equal-increment movement of the platen and card holder II and positioning of the card holder in predetermined positions with respect to the printing line, a holding pawl comprising a roller 42 carried by an arm 43 pivoted on the carriage as at M is urged constantly into engagement with the ratchet wheel 28 by means of a spring 45. The parts of the line-spacing mechanism thus far described are the same as corresponding parts.

in line-spacing mechanism used as standard equipment in the Royal Standard typewriter.

For variably controlling the angular movement of the ratchet wheel and platen and the number of line-spacing unit or increment movements of r 48 and 49 on the shield respectively with a stop pin 50 fixed to the left-hand carriage end plate,

2. The shield is adapted to be moved to different positions angularly with respect to the ratchet wheel 26 for disabling the pawl 28 during variable portions of the stroke of the rock arm 21. In order to change automatically the position of the shield in response to the first movement of the line-spacing lever after the card holder H has been positioned in its lowermost position, the shield 45 is yieldably constrained to rock or rotate with the ratchet wheel 26 by a detent of the click type. In the form shown, the click type detent comprises a spring finger i riveted to the shield as at 52 and having its free end crimped into a V shape as at 53 for engagement between the crests of adjacent teeth on the ratchet wheel with pressure exerted radially and inwardly with respect to the ratchet wheel so as to provide a semipositive drive connection. between the shield and the ratchet wheel.

In operation, and assuming that it is desired to separate the first line of stencil impressions from the line of inked impressions by three linespace increments, and then to separate adjacent lines of stencil impressions from each other by L a single line-space increment, the card D is placed in the card holder l l and the finger piece it is rocked in a counterclockwise direction from the position shown in Figure 2 to the position shown in Figure 3 so as to move the card holder 2' to its lowermost position, as shown in Figure 3. The top" part of the stencil card frame D will then be positioned at the writing line, and the shield 55, rock arm 21, and pawl 23 will be in the positions shown in full lines in Figure 6. g

A line 54 of inked impressions may then be typed as indicated at 5% in Figure 9. When the linespacing and carriage return lever 34 is actuated the rock arm 2i and pawl 23 will be rocked clockwise from the positions shown in full lines in Figure 6. As soon as the pawl nose Si! drops on the peripheral shroud {ii of the shield, it

will come to the position indicated in dotted lines at 28 in Figure 6, and continued rocking of the lever 34' and arm 2: will cause the pawl to move successively to the positions indicated in dotted lines in Figure 6 at 28 28 and 28 the pawl being arrested in the last position by 54 of inked impressions. Such movement of the ratchet wheel 26 drives the shield 46 semi-positively through the click detent 5|, and positions the shield anew as shown in Figure 7. During the next operation of the line-spacing lever 34 and rock arm 21, the pawl nose 30 will ride idly along the shield shroud ll during the first part of its stroke, and will then move down into the dotted line position28 shown in Figur '7. Continued rocking of the lever 34 and arm 21 will move the pawl to the dotted line position 28 indicated in Figure 7 until arrested by engagement of the pawl with the stop pin H. Thus the active movement of the pawl for driving the ratchet Wheel 26 is limited to a single line-spacing increment or unit for moving the card frame ii upwardly to space the next or second line '55 of stencil impressions a single line-space increment or unit below the first line of stencil impressions. During this last line-spacing movement of the ratchet wheel 25, the shield Was held stationary by engagement of the stop lug 43 with the stop pin '50, and the ratchet wheel 26 was permitted to turn relatively to the stationary shield by yielding of the detent 5!. 'The card holder I I will be moved upwardly for single line-spacing increments upon successive operations of the line-spacing lever '35 in the same manner. The number of line-spacing movements of the card holder H, and, consequently, the number of stencil lines which can be impressed on the stencil sheet, is limited finally by engagement of the stop lug I! with the stop pin 18. If, however, the desired number of lines has been completed before the lug ll engages the pin iii, the card holder I! may be moved to its uppermost position before withdrawing the card D by rocking the finger piece E5 in a clockwise direction as viewed in Figure 3.

Sometimes itmay be required-that the first line of stencil impressions be spaced a maximum line-s acin such as thre line-s ac increments l 0, e p 8 V below the line of inked impressions on the card frame and that successive lines of stencil impressions be spaced from each other by an inner is shown diagrammatically in Figure 10,.

wherein the uppermost line 56 of stenciled impressions is spaced three line-spacing increments below the line of inked impressions 5t and the lowermost line of stencil impressions 55 is spaced two line-spacing increments below the uppermost line 55.

In accordance with the invention, arid for enabling the preparation of a card of thekind shown in Figure 10, a manually operable finger piece 5? on the shield it is cooperable with the detent 55 for moving and positioning the shield at so as to provide for the imparting of exactly two line-spacing increments to the card holder ii in response to a single actuation of the linespacing lever B l. Referringto Figure 7 the shield 515 is shown in such a position that upon the next actuation of the lever a single line-spacing increment movement would be produced. In order to provide for the effecting of a two increment line-spacing of the card holder H in response to the next actuation of the lever 3 the shield 55 is shifted back to the position shown infull lines in Figure 8, this being conveniently accomplished'by means of the manually adjustable finger piece element '51. The reverse rocking movement of the shield required for conditioning the mechanism to efiect the two increment line-spacing movement in its next operation is such that the detent end 53 passes over two teeth on the ratchet wheel 26 and for checking or verifying the correct positioning of the shield the operator may refer to the registration of a pointer heel 58 on the pawl 28 with index numerals indicated at 59 on the shield shroud 41. When the lever 35 and arm ,2! are rocked the pawl will drop down to engage the ratchet wheel at the position indicated in dotted lines at 28' in Figure 8, and upon further rocking of the arm 27 the pawl will move successively to the two new positions indicated at 28 and 28 in Figure 8. Consequently, the card holder II will be moved upwardly for two line-spacing increments.

The click detent i, interposed between the ratchet wheel and shield, performs the dual functions of, first, causing the shield 46 to be rocked in opposite directions, respectively, dependent upon the direction of movement of the ratchet wheel 26 and to the opposite limits of rocking imposed by the stop lugs Q8 and 9 engaging the stop pin 59; and, second, yieldably constraining the ratchet wheel 26 and shield 8 to any of a number of set, angularly displaced positions with respect to each other. The extent of the relative angular displacement of the ratchet wheel 26 and the shield 46 in each of these positions is a whole number multiple of the angular movement of the ratchet wheel 26 corresponding to a minimum complete line-spacing increment of the card holder I!. Thus, the shield may be adjusted with certainty to condition the mechanism automatically to effect a line-spacing of intermediate total extent, such as two line-space increments.

Because of the compactness of the assembly of the carriage and parts supported thereon in the Royal Standard typewriter, the platen 5 is disposed only a short distance above the carriage bottom rail I, and,-in order to permit the card holder II to move the card D to a position low enough to provide for typing along the top of the card frame D the rail I is formed with a cut-out or slot 69 which is adapted to accommodate or receive the lower portions of the card holder I I and card D when the latter are in their lowermost positions, as shown in Figure 3.

The construction illustrated and described herein embodies the invention in its now preferred form, but it will be understood that changes may be made without departing from the invention as defined in the claims.

I claim:

1. In a stencil card typing machine, a platen; a card holder mounted in cooperative relation to said platen or line-spacing movements; 2, linespacing ratchet wheel; driving connections be tween said ratchet wheel and said card holder; a line-spacing lever; a pawl operable by said lever and engageable with said ratchet wheel for rotating the latter and line-spacing the card holder; a shield rockably mounted with respect to said ratchet wheel and encompassing a portion of the periphery of said ratchet wheel and being engageable by said pawl for maintaining the pawl out of engagement with said ratchet wheel to variably control the amount of angular movement of said ratchet wheel and the amount of line-spacing movement of said card holder effected by an operating Stroke of said linespacing lever; stop means for limiting rocking movement of said shield in opposite directions:

and a click type detent interposed between said ratchet wheel and said shield and having two functions (one) to cause said shield to be rocked in opposite directions respectively dependent upon the direction of movement of the ratchet wheel and to the opposite limits of rocking imposed by said stop means, and (two) to yieldably constrain said ratchet wheel and said shield to any of a number of set angularly displaced positions with respect to each other, the extent of relative angular displacement of said ratchet wheel and said shield in each of said positions being a whole number multiple of the angular movement of said ratchet wheel corresponding to a minimum complete line-spacing movement of said card holder.

2. In a stencil card typing machine, a platen; a card holder mounted in cooperative relation to said platen for line-spacing movements; a linespacing ratchet wheel; driving connections between said ratchet wheel and said card holder; a line-spacing lever; a pawl operable by said lever and engageable with said ratchet wheel for rotating the latter and line-spacing the card holder; a shield rockably mounted with respect to said ratchet wheel and encompassing a portion of the periphery of said ratchet wheel and being engageable by said pawl for maintaining the pawl out of engagement with said ratchet wheel to variably control the amount of angular movement of said ratchet wheel and the amount of line-spacing movement of said card holder eiTected by an operating stroke of said line-spacing lever; stop means for limiting rocking movement of said shield in opposite directions; a click type detent interposed between said ratchet wheel and said shield and having two functions (one) to cause said shield to be rocked in opposite directions respectively dependent upon the direction of movement of the ratchet wheel and to the opposite limits of rocking imposed by said stop means, and (two) to yieldably constrain said ratchet wheel and said shield to any of a number of set angularly displaced positions with respect to each other, the

extent of relative angular displacement of said ratchet wheel and said shield in each of said positions being a whole number multiple of the angular movement of said ratchet wheel corresponding to a minimum complete line-spacing movement of said card holder; and a finger piece connected to said shield for rocking it from one of its said set positions with respect to said ratchet wheel to another of its said set positions. 3. In a stencil card typing machine, a platen; a card holder mounted in cooperative relation to said platen for line-spacing movements; a line-spacing ratchet wheel; driving connections between said ratchet wheel and said card holder; a line-spacing lever; a pawl operable b said lever and engageable with said ratchet wheel for rotating the latter and line-spacing the card holder; a shield rockably mounted with respect to said ratchet wheel and encompassing a portion of the periphery of said ratchet wheel and being engageable by said pawl for maintaining the pawl out of engagement with said ratchet wheel to variably control the amount of angular movement of said ratchet wheel and the amount of line-spacing movement of said card holder effected by an operating stroke of said line-spacing lever; stop means for limiting rocking movement of said shield in opposite directions; and a clicl; type detent interposed between said ratchet wheel and said shield for causing said pawl out of engagement with said ratchet wheel shield to be rocked semi-positively in opposite directions respectively dependent upon the direction of movement of said ratchet wheel.

4. In a stencil card typing machine, a platen; a card holder mounted in cooperative relation to said platen for line-spacing movements; a line spacing ratchet wheel; driving connections between said ratchet wheel and said card holder; a line-spacing lever; a pawl operable by said lever and engageable with said ratchet wheel for rotating the latter and line-spacing the card holder; a shield rockably mounted with respect to said ratchet wheel. and encompassing a portion of the periphery of said ratchet wheel and being engageable by said pawl for maintaining the pawl out of engagement with said ratchet wheel to variably control the amount of angular movement of said ratchet wheel and the amount of line-spacing movement of said card holder effected by an operating stroke of said line-spacing lever; stop means for limiting rocking movement of said shield in opposite directions; and a spring detent finger secured to said shield and resiliently engaging the teeth of said ratchet wheel for causing said shield to be rocked with said ratchet wheel within limits fixed by said stop means in opposite directions respectively dependent upon the direction of movement of said ratchet wheel.

5. In a stencil card typing machine, a platen; a card holder mounted in cooperative relation to said platen for line-spacing movements; a line spacing ratchet Wheel; driving connections between said ratchet wheel and said card holder; a line-spacing lever; a pawl operable by said lever and engageable with said ratchet wheel for rotating the latter and line-spacing the card holder; a shield rockably mounted with respect to said ratchet wheel and encompassing a portion of the periphery of said ratchet wheel and being engageable by said pawl for maintaining the to variably control the amount of angular movementof said ratchet wheel and the amount of line-spacing movement of said card holder effected by an operating stroke of said'line-spacing lever; stop means for limiting rocking movement of said shield in opposite directions; and a spring detent finger secured to said shield and having a substantially V-shaped free end portion in yielding contact with the teeth of said ratchet Wheel for causing said shield to be rocked with said ratchet wheel within limits fixed by said stop means in opposite directions respectively dependent upon the direction of movement of said ratchet wheel.

6. In a stencil card typing machine, a platen; a card holder mounted in cooperative relation to the platen for line-spacing movements; a linespacing ratchet wheel having a set of peripheral teeth; driving connections between said ratchet wheel and said card holder; a line-spacing lever; a rock arm having a pivot coaxial with said ratchet wheel and being rockable in response to actuation of the line-spacing lever; a pawl pivoted on the rock arm and being eng'ageable with the teeth of said ratchet wheel for rotating the latter and line-spacing the card holder; a rockable ratchet .wheel shield coaxial with said ratchet wheel and having a pawl-engageable peripheral shroud portion encompassing a portion of the toothed periphery of said ratchet wheel, said shield being adapted to be so variably positioned as to vary the amount of stroke of said arm and pawl which can be efiective for rotating said ratchet wheel and line-spacing said card holder; stop means for limiting rocking V

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