US953494A - Type-writing machine. - Google Patents

Description

H. H. STEELE. TYPE WRITING MAGHINE.

APPLICATION FILED DEO.16. 1908.

953,494. I Patented Mar. 29, 1910.

2 SHEETS-SHEET 1.

"'HIE ATTEIRNEV H. H. STEELE.

TYPE WRITING MACHINE.

APPLICATION FILED DEO.16,1908. 53,44, Patented Mar. 29, 1910.

akanms-snnm 2.

WITNEEEEE: I INVENTE|R= ZZM M/? /m HIEATTEI EY llhlli llfi iaf HERBERT H. STEELE, QF MARCELLUS, NEW YORK, ASSIGNOR TO THE MONAEGH TYPE- VIRITER COMPANY, OF SYRACUSE, NEW

YORK, A CORPORATION OF NEW] YORK.

' TYPE-WVRITING IYIACI'ZINE.

953A et.

Specification of Letters Patent.

Patented Mar. 29, 191% Application filed December 16,, 1908. Serial No. 467,784.

To all whom it may concern Be it known that I, HERBERT H. STEELE,

citizen of the United States, and resident of Marcellus, in the county of Onondaga and necessity for any State of New York, have invented certain new and useful Improvements in Typerltlng Machines, of which the following is a. specification.

My invention relates tb ink ribbon mechanism and particularly to such mechanism for typewriting machines.

In the Monarch typewriter as heretofore constructed the ribbon spools have been made detachable and each of said spools has had mounted thereon a part of the automatic reversing mechanism for changing the three-- tion of longitudinal feed of the ribbon.

One ofthe objects of the present invention is to. place this part of the ribbon reversing mechanism on a part of the machine where it remains permanently in place when the spools are detached, thus cheapening the construction of the spools. it would be convenient for the user of a machine to have several pairs of spools with different sorts of ribbon thereon and these extra spools can be more cheaply produced by obviating the movable mechanical parts being mounted on the spool itself. In the Monarch machine as heretofore constructed these spools have not been reversible but have had to be placed on the machine in a definite way. and it is one of the objects of the present invention to make these spools ing the ribbon on the spool at the factor no care need be exercised as to the direction in which the ribbon is wound.

To the above and other ends which will appear hereinafter, my invention consists in certain features of construction and combinations and arrangements of parts, all of which willbe fully set forth herein and particularly pointed out in. the claims.

l r l l l I I 1'7, each of which is In the accompanying drawings, Figure l is a fragmentary elevation, partly in section, as seen from the middle of the m chine, of-part of the top plate writer and one of the ribbon spools and as sociated mechanism made in accordance with my invention. Fig. .2 is a detail top plan view of a part of the ribbon driving and re versible mechanism. Fig. 3 is a top view of one of the ribbonspools. Fig. i is a view of the spool in horizontal section through the core thereof. Fig. 5 is a fragmentary sectional view through the center of enact the spools and its driving shaft. Fig. 6 is a side or edge view of one of the ribbon. spools. Fig. 7 is an enlarged detail perspec tive view of a ribbon controlled lever forming part of the automatic reverse. Fig. 8 is a diagrammatic plan view of the ribbon driving and reversing mechanism. Fig. 9 is a diagrammatic side view of the same, parts being shown in section.

For-the purpose of illustration I shown my invention embodied in the h are More derstood. that the invention is applicable or adaptable to other styles of typewriters and to other writing or printing lIluQhlnGS.

in the Monarch machine the top plate 3. is supported by corner posts 2 and on said top plate is mounted a paper carriage which. is driven in letter space direction by a spring drum 3. Said spring drum, when the car riage is moving toward the left, turns a bevel gear 4 which meshes with a bevel gear 5 mounted on a transverse driving shaft 6 which carries two bevel gears 7 and S adapt ed to mesh respectively with bevel gears f and 10 on therea-r ends of horizontal. :t and aft extending shafts 11 and respectively, these shafts 6, 11 and 12 being rmailed in brackets 13 (Fig. 1) depending of a Monarch type- 7 from the top plate 1. The shaft 8 is adapted to be moved endwise to connect it with one or the other of the shafts l1 and 12 by moving the gear 7 or 8 into m esh with its oooperating gear. At their forward ends the shafts 11 and 12 have bevel pinions 1.4: that mesh with bevel gears 15 mounted on the lower ends of vertical ribbon spool shatt-s journaled in a boss 18 of the top plate.

.he automatic ribbon reversecomprises a pair oi worms 20 rigidly mounted on the she it (5, one near each end thereof, and these I worms are adapted to be engaged by pins 21 consisting of forwardly bent ends of rods 22 that are slidably mounted in brackets 23 beneath the top plate 1, each. of the rods 22 being pressed toward the front of the machine by a coiled spring 24. Each of the rods 22 has at its forward end a pin 25 that projects upward through a suitable slot in the top plate into the path of a horizontal swinging lever 26 which is pivoted at 27 to the top plate 1 and is moved in one direction by a spring 28 which tends to turn the lever 26 in such a way as to force the rod.

22 toward the rear of the machine into the position shown at the right-hand side of Fig. 8, which is the normal position of this rod, the spring 28 being strong enough to overcome the spring 24. The inner end of the lever 26 is bent upward, forming a lug 30 which, when the ribbon is exhausted from the spool, is adapted to be struck bya cam 31 and forced by said cam into the position shown at the left-hand side of F 8. The cam 31 rocks the lever 26 on its pivot against the tension or its spring 28, thus relieving the pressure on the pin 25 and permitting the spring 24 to move the rod 22 toward the front of the machine, thus drawing the pin 21 into the worm 20 and shifting the shaft 6 toward the empty spool andreversing the feed.

Most of the parts thus far described are shown only diagrammatically as these parts are old and well-known and they are or may be similar to the parts shown in the patent to Felbel and Gabrielson li o. 703,339, dated June 24th, 1902. As heretofore constructed, however, the shaft 17 has extended clear up through the ribbon spool and the cam 81 has been mounted on the lower flange of said spool. By the present construction the shaft 17 terminates a little above the top plate 1 and beneath the ribbon spool. in an enlargement or head 32 forming a shoulder that rests on the'top of the top plate and the es;- treine upper end of said shaft is reduced. and threaded. This reduction. of the upper end of the shaft forms an annular shoulder on which rests a disk 34 which is secured in place by a nut 35 screwed on to the threaded part 33, thus rigidly mounting the disk 84 on the upper'end of the shaft 17. The cam 31 is pivoted to the under side of the disk 34: by means or" trunnions 36 projecting from the arms of the cam and extending into loops 37 struck down from the sheet metal of which the disk is made. A light fiat spring 38 is secured to the under side of the disk 34 by being forced through a loop 39 struck down from the sheet metal plate and this spring bears lightly on the top of the cam 31 and assists gravity in depressing said cam when it is released for the purpose of reversing the feed. The cam 31 is normally held up against the under side of the disk of sheet metal. namely, two

hissed i.

34: by means of a bell cranlt lever having the form shown in Fi 7. l his lever is made of sheet metal and comprises a horizontal arm l0 that lies beneath the cam 31, a curved upright arm. or tongue il'that extends into the ribbon spool. about llush with the core thereof and is uornmlly in contact with the ribbon, and two cars 42 perforated to receive a pivot rod 43 which passes through ears eel struck down from the disk 3%. This bell cranlr'lever is thus pivoted in an opening 45 in the dish 34;, the cars at consisting of a part of the metal. forced out of said opening. One of the ears has a heel, ex tension or stop as which, by contact with the under side of the disk 34, limits the downward motion of the bell crank and consequently the downward motion of the cam 31 when said bell crank and cam are released by the exhaustion of the ribbon on the spool.

The ribbon spool consists of three pieces nges or heads 47 and a cylindical core piece 48. core piece has ears 50 pro ecting from its edges through suitable openings 1n the heads and bent over as shown in Figs. 1 and 2 to secure the heads to the core piece. Each of the heads is dished in cupped as shown at 51 inside or the core and this cupped part is adapted to malts room for the nut when the spool is in place on its carrier, as shown at Fig. 1. The spool heads are also stiffened by this cupping and also by peripheral outwardly turned rims 52 and by a bead formed with raised'letters as shown at 54: and these letters also serve to stilien the spool heads. Each sa heads has a rectangular opening 55 to: the reception of the arm 4-]. the reversing bell crank, a

central opening ant a hole 57 adapted, when the spool 18 in a formed into points 60. this strip of metal being bent into cylindrical form and the points 60 being bent in at an inclination as shown in Fig. l to serve as means for securing the end of the ribbon to the'spool. The core piece does not constitute a 00mplete cylinder but the points 60 terminate at the edges of the openings 55 in the head pieces, thus leaving in the core an opening (31 Fig. (3) in which the bell crank arm 41 is adapted to play.

Fig. 4 shows the manner in which the ribhon 62 is wound on the spool, one of the spool heads being sectioned away in this figure. The end 63 of the ribbon is caught.

This

The webbed part may be cam is to cause the bell and the ribbon is wound around the spool, leaving, of course, a flat part across the opening 55. When the spool is placed in the machine the lower opening 55 is slipped down over the arm or tongue all of the bell crank. It will be seen that the upper end portion of the arm 41 is curved as zit-4C1 so as to form a cam. The purpose of this crank 404l to be forced to the normal position shown in Fig. 1 as a spool is placed in position. Thus when a spool is removed the arm 4-1 is pressed outwardly by the spring 38' and as a spool is placed in position the ribbon will contact with the cam 41*, 41 inwardly within the coil of ribbon against the pressure of the spring 38. The arm 41 being in the middle of the spool as indicated in Fig. l, and under pressure of the spring 38, bears lightly against the inside of the coil of ribbon.

The enlarged upper end of. each shaft 17 formed with an axial hole (34. to receive detachable spindle having a milled head 66. This spindle may be secured to the shaft in any suitable manner but as here shown it is formed with a split 67 to provide two arms with slight inherent resiliency sufiicient to hold the spindle in place by friction, the two arn'is or branches of the, lower end of the spindle extending intothe hole 64. The lower end 68 of the spindle is made conical as shown in Fig. 5. When the spool is placed in the machine with the arm -11 in the spool, this spindle 65 is thrust through the opei'iings 56 in the heads of the spool and is forced into the opening 64 in the shaft 1?. The conical end (38 of thespindle forces the spool to central position, pressing the ribbon against the arm 41 and forcing said arm to the position shown in Fig. l, and holding the cam 31 up where it will not act on the lug 30. The spool is slightly turned it necessary to bring the pin 58 into the hole 57 and the spindle is pushed down to such an extent as to hold the spool in place on the disk It will be seen that the spool is thus secured sufficiently rigidly to said disk 34 and the shaft 17, partly through the spindle G5 and partly forcing the arm l 1 l l l l i l g l l I l g I l l l l l l through the pin 58, said spindle and pin;

centering the spool so that no part of the spool rubs against the bell crank 40 to interfere with the motion of said bell crank. \Vhen the ribbon is exhausted from a spool the arm 41 of the bell crank is released and the cam 31 drops down and effects the reverse in the feed in the manner hereinbefore described.

Each of the holes 57 is on the same diameter of the spool as the companion hole 55.

It will be noted that both sides of the spool are/exactly alike and that hath sides of the opening 61 are equipped with the points for securing the ribbon. I f these l l l l l spools are filled at the factory there is no necessity for exercising any care as to which my the ribbon is wound on the spool. Either spool will go on either side of the machine and either spool will fit into the machine with either side up. In placing any spool in the machine with the ribbon already wound on it, it is of course, necessary for the operator to take care to mount said spool in the "machine with due regard to the direction in 'which the ribbon is wound.

Various changes may be made without departing from my invention.

What I claim as new and desire to secure 8 by Letters Patent, is

1. An ink ribbon spool built upof two heads and a core, said core being of a sheet metal strip the ends of which do not meet whereby a slot is left in the core, and an end of said strip being formed into poiiits for attaching the end of the ribbon to the spool.

2. An ink ribbon spool comprising two heads and a core,said core-i being formedwith a longitudinal slot and having points projecting inward from an edge of said slot fol-attaching the end of the ribbon to the spool.

3.111 a writing machine, the combination of a ribbon spool, a rotary carrier for said spool, and a headed spindle thrust axially through said spool and securedto the end' of said carrier.

4.. In a writing machine, the combination of a detachable ribbon spool having an open ing in a head thereof, acarrier for said spool, a reversing device adapted to enter said opening when the spool is placed on its carrier, and a spindle with a tapered end, aranged to be thrust axially through said spool and into an opening in'said, carrier, said tapered, end of the spindle acting as a cam to center the spool on the carrier.

In a writing machine, the combination of a vertical shaft for a ribbon spooha disk mounted on the upper end of said 'shaft,,a cam mounted on the under side of said disk,

a lever for controlling said cam, a detachable ribbon spool ha-ving in a head thereof an opening to receive an arm of said lever 5 inside the coil of ribbon, a spindle adapted to be thrust axially through said spool and into a hole in the upper end of said shaft, and ribbon driving and reversing mechanism controlled by said cam.

(3. In a writing machine,:the combination of a detachable ribbon spool, means on said spool for attaching the end of the ribbon for winding on the spool in either direction, driving mechanism for said spool, and means l on both heads of the spool for connecting said spool with said driving mechanism, whereby said spool is reversible.

7. A detachable ribbon spool comprising two heads and a core, said core having a slot 130 therein armed on both sides with points for 4 connected to the edge attaching the end of the ribbon so that the ribbon can be attached for winding in either direction, and both heads formed with means for coiiperating with driving mechanism for said spool.

8. In a writing machine and in ink ribbon mechanism, the combination of two spool carriers, means for driving said carriers, two ribbon spools each comprising two heads, means on each head of each spool for connecting either head of either spool with either of said carriers, and means in each spool for attaching anend of the ribbon for winding in either. direction.

9. The combination of a, rotary ribbon spool carrier, a driving pin on said carrier,

means for driving said carrier, an automatic reverse device a part of which is mounted on said carrier, a detachable ribbon spool adapted to be mounted on said carrier and comprising two heads, each of said heads having an opening for the reception of a part of said automatic reverse device, and an opening for said driving pin and both of said openin s in each head being on the same diameter 0 the spool.

10. A ribbon spool comprising a core formed of a strip bent into substantially cylindrical shape with an open space between the ends of the strip, said ends being provided with tines, the tines on bne strip projecting toward the tines on the other strip; and heads or flanges connected to the edges of the strip.

11. In a writing machine, the combination of a ribbon spool comprising a core formed of a strip bent into substantially cylindrical shape with an 0 en space between the ends of the strip, sai ends being provided with tines, the tines on one end pro ecting toward the tines on the other end; heads or flanges strip; and a 12.11 the space reversing device rece i which const1- between the ends of t. tutes the core of the sp,

12. In a writing machip 1e combination of a detacha 1e and revencble ribbon spool having ope ings in both heads or flanges thereof; a carrier for said ribbon spool; ribbon reversing mechanism including a device carried by said carrier, said device being adapted to be received within the opening in either of the heads of the ribbon spool and to be brought into cooperative relation with the ribbon on the spooi irrespective of the op ning through which said device ea:-

tends: and a detachable spindle that passes axially through the ribbor spool position a ribbon spool in its carr 13. In a writing machine, the combination of a detachable andreversible ribbon spool, each head of which is provided with a reversing-device-receiving-opening a iociring opening; a ribbon spool carrier provided with a locking pin that is adapted to be received in either of the inciting openings in the heads of the ribbon spool; ribbon reversing mechanism including an actuating device controlled b the ribbon and carried by said carrier, sai ribbon reversing device'being adapted to be received in either of the re 'F of the riobon W which passes eoi which ribbon spooi ceiving-openings in the h spool; and a detachable sp 7 axially through the ifbbo is detachably connected o carrier.

Signed at Syracnse,in daga and State of New of December A. D. 19

' HIE-BBQ

Images