US568645A - walker - Google Patents

Description

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, o. W. WALKER. TYPE WRITING MAGHINE.

N6. 566,645. Patented sept. 29, 1896.

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C. W. WALKER. TYPE WRITINGr MACHINE.

N0. 568,645. Patented Sept. 29, 1896.

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A c W WALKER v TYPE WRITING MACHINE. No. 568,645.

Patented sept. 29, 1896.

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CHARLES WV. WALKER,`OF BRIDGEPORT,CONNECTICUT, ASSIGNOR TO THE YOST l/VRITING MACHINE COMPANY, OF NEV YORK, N. Y.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 568,645, dated September 29, 1896. Application tiled September 25, 1894. Serial No. 524,072. (No model.)

To @ZZ whom, t may concern:

Be it known that I, CHARLES W. WALKER, a citizen of the United States, and a resident of Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My present invention has for its objects io more particularly to improvethe constructions of machinesA made the subjects of applications iiled by me August 2, 1894, Serial No. 519,231, and September 14, 1894, Serial No. 522,976; and it consists in the various features of construction and combinations of devices hereinafter more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a partial top plan view of a Yost type-writing machine embodying my several improvements, the keyboard and various other parts not essential to show being omitted for'the sake of clearness. Fig. 2 isa top plan view of 2 5 the carriage and its attachments, showin gals'o the rear portion of the platen-carrier partly in section and in its turned-up position, illustrated also at Fig. 4. Fig. 3 is a left-hand side elevation of the machine shown at Fig. 3o 1. Fig. 4L is a similar view with the platen carrier or frame turned up either for inspection of the work or for detachment. Fig.' 5 is a vertical section taken at the line .e z' of Fig. 1. Fig. 6 is a perspective view of the antifriction-ball connector. Fig. 7 is a detail side elevation of the inner end of the releasekey lever. Fig. 8 is a top plan View of the dog-holder, the dogs, and the switch for obtaining either single or double spacing. Fig. 9 is a vertical section taken at the line y y of Fig. 2. Fig. 10 is a perspective view of the carriage and platen-carrier and their accessories. Fig. ll is a vertical section taken at the line :c 0c of Fig. 1. Fig. 12 is a perspective View of one of the feed-teeth, and Fig. 13 is a like view of one of the column-stop teeth. In the various views the same parts will be found designated by the same numerals of reference.

I have shown my .improvements emboded `and near the ends or corners rise two brackets G, which support, horizontally, two guide- 6o bars 7 and 8, attached to said brackets by screws 9. The said guide-bars are parallel with each other and are separated to accommodate an intermediate bar, frame, or carriage 10. The inner side of the rear guidebar is provided with a V-groove 11, extending its whole length, and the inner side of the front guide-bar is provided with a V-groove 12, likewise extending the full length of the bar.

The rear side of the frame or carriage is 7o formed or provided with a longitudinal V- groove 13 to associate with the groove 1l, and the front side of said frame or carriage is formed with a longitudinal groove 14E to associate with the groove 12. The said grooves 11 75 and 13 form bearings for two antifriction-balls 15, and the grooves 12 and 14 form bearings for a single antifriction-ball 16. The antifriction-balls 15 are arranged apart several inches and are maintained in this relationship by a 8o Athin yoke or coupling-bar 17 havin g near each end a hole 18, and in which one of said balls is housed in such a manner that the ball protrndes on each side beyond said bar and takes a proper bearing in the V-grooves 1l and 18. 85 The bar 17 is provided with an arm 19, which is bent or shaped to extend over to the antifriction-ball 16 and seize or partially inclose the same by means a notch or cut-away 20, formed at its front end. This arm 19 is located about midway of the bar 17, and, 'forming a part thereof, operates to hold the single antifriction-ball 16 always in a fixed position relatively to the antifriction-balls 15, thus forming three extended points of bearing for 95 the frame orcarriage 1t),y the said antifrictionball 16 projecting on each side beyond its housing and bearing properly in the V- grooves 12 and 14, all as clearly shown inthe various views. Between the guide-bars andthe frame Ioo or carriage are spaces sufficiently wide to accommodate the bar 17 and the vertical portions of the arm 19.

For the purpose of maintaining the antifriction-balls in proper relationship to the frame or carriage, means are provided to engage at certain times with some part of the ballsholder 17 l) to automatically ad]- ust the same relatively to the carriage. In the eze cursions of the carriage, by momentum, vibration, or from other cause, the balls may travel slightly faster or slower than the carriage, thus effecting a change in the relative position of the balls and carriage, which should be corrected las soon as possible. To

this end lugs or abutments are employed, and

these devices may either be connected to the carriage or may be attached to a lixed part of the machine, as, for instance, one of the guidebars- Both forms et lugs orabntinents are shown, the carriage or movable lugs or abutments being designated by 21 and the stationary lugs or abutments by 22. Although I have shown the said two forms of lugs or abutments, it is of course not necessary for both to be employed at the saine time; yet they may be so used without detrimeiit to the action ot the machine.

The lugs or abutments 2l project upwardly from a horizontal bar 23, whose main function is to maintain in a normally-depresscd condition the line or series of individual feedteeth hereinafter more fully described, and said bar is bifurcated at its ends, as shown at 2i, to embrace ears 25, rising from a feedrack 2G, mortised or set into the frame or carriage 10 and secured in place by screws 27, whereby said bar is held laterally and lon gitudinally in proper position with reference to the feed-rack, while at the same time it is free to rise and fall slightly during the ascent and descent of the independent feed-teeth. The said bar 23 is elastieally connected to the said ears at each end by a light wire spring` 2S, which at one end is attached tothe lugor abutment 21 and at its other end to the ear Q5, all in a manner such that the said springs tend to keep the bar down and the feed-teeth thereunder in their lowermost or normal po sitions, whereby they may be successively properly presented to the spacing-dogs during the step-by-step movements of the carriage. The lugs or abutments 21 are of such a height that they may contact with the edges of the horizontal portion of the arm 19 of the ball-holder, and hence if, during a movement ot the carriage toward the left, the ball-holder should travel too far in the same direction, the lug or abutment 21 on the left (considered from the front of the machine) will, on the return movement of the carriage for the beginning et a new line, strike against the lefthand edge ot' the arm 19 and cause the ballholder to travel with the carriage to the end of its movement,thus restoring the ball-holder to its proper position relatively to the carriage. In like manner, should the ball-holder lose its proper position with relation to the carriage during its movement toward the lett by reason of a lagging action, the lug 21 on the right-hand side of the carriage will come in contact with the edge ot the arm 19 and drive the ball-holder along with the carriage during the remainder of the travel of the latter. The lug 21 on the leftliand side is, however, the more important one, inasmuch as the tendcneyof the ballfholdcr is te go too far to the left, and said lug operates to return the ball-holder and the antilrietioirballs carried thereby to the right and to their correct positions on the return movement of the carriage for the commencement of a new line; but the right-hand lug 2l, like the left-hand lug, performs the important function of preventing the ball-holder from accidentally detaching from the machine, and thus insuring the maintenance ot the balls in their grooves or bearings.

The lugs or abutments 22 are fast on the rear guide-bar and, projecting inwardly in the path of the rear vertical member of the arm 19, limit the movements of the ball-holder in both directions of travel of the carriage, thus insuring the proper relationship of the ball-holder to the carriage and preventing the escape of the balls from their grooves or bearin The travel of the carriage in its movements toward the left is limited by a screw 29, projecting from the under side ofthe carriage, and which contacts with the left-hand standard or bracket (i, while the travel ot the earriage toward the right is limited by another screw 30, also projecting from the under side of the carriage and adapted to contact with the right-hand bracket or standard (5.

The teeth 31 of the fccdrack are arranged in guiding-slots 32, eut vertically and transversely in the rack-bar, so that each tooth may slide up and down independently of the remainin g teeth. Each feed-tooth comprises a body portion lateral shoulders 34.-, downward projections 35, and an intermediate space or cut-away 3G. The shoulders rest upon uncut portions oi the rack-bar and prevent the tooth from falling therethrough, the rack-bar being slotted centrally and longitudinally 'for nearly its whole length, and the carriage 10 being likewise slotted coincidentally with said rack-bar for the accommodation et the body portions and depending projections of the series of feed-teeth, the l1old ing-dog 37, and the feeding-dog 38. r1he holdingdog is made integralwith a fixed bar 39, which is fastened by screws to the branching members 4:0 ot' an arm ttl, secured to the back of the top plate and carrying at its inner end a type-guide 42. The upper end ot' the holding-dog stands always in front oi the body 33 of one of the teeth in the normal position of the latter, so as to intercept the same and hold the carriage against the pull of the IOO IIO

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usual spring driving-drum, (not shoWn,) to which the carriage is connected by a cord or chain 43. Y

The feeding-dog 38 is composed preferably of two side plates 44 and an angular connecting-plate 45, and said side plates embrace the rigid dog and the supporting-bar 39, from which it rises. The feeding-dog has an upand-down movement and also a lateral movement, the former being effected through a rod 46, which is connected at its lower end to the printing and spacing mechanisms, and the latter (in one direction) through a coiled spring 47 and (in the opposite direction) through the rack-teeth in moving under the influence of the spring-drum. The upper end of the feeding-dog when moving upwardly engages the bottom edges of the projections 35 of the tooth and, lifting said tooth, frees it from the retaining action of the holding-dog 37 by raising the body 33 of the tooth above the point of the holding-dog, whereby said tooth, under the pull of the spring-drum, may pass by the holding-dog, thus enabling the carriage to feed one tooth orletter space. The carriage is prevented from moving farther at this time by reason of the fact that the next succeeding tooth is down and its body portion strikes against the face of the holding-dog. When the feeding-dogis pulled down, the spring 47 pulls it toward the right, (viewed from the front of the machine,) and this lateral movement of the dog is limited by either of two pairs of stops 48 or 49, formed on the inner end of a lever or plate 50, pivoted at 5l upon the bar 39, and having a handle by which either of the stops may be shifted into working position, the vibratory movements of the switch-plate 50 being restricted by a screw and slot, as shown at 52. The upward movement of the feeding-dog is limited by a projection 53, which strikes` against a vertical screw 54, extending through the supportingbar 39.

At Fig. 4 the feeding-dog is shown in its uppermost position, and the parts are drawn in their normal positions or to represent a feeding movement as having just occurred. Vhen the finger-key or space-key is actuated, the feeding-dog is drawn down from in front of the legs or projections 35l of the tooth obstructed by the holding-dog, and as soon as it is carried below the plane of the said legs or projections it is drawn toward the right by the spring 47 against the stops 48, which may now be supposed to be in working position. At this moment there is no feed of the carriage. When, however, the finger-key or space-key is released, the top of the feedingdog lifts the feeding-tooth now restrained by the holding-dog, so that the cut-away 36 alines with the top of the holding-dog, and thereby the feed of the carriage takes place. During this feeding movement the legs of the next succeeding tooth strike the face of the feeding-dog and carry it back to its normal position in alinement with the face of the holding-dog, which, as explained, is struck'by the body of said oncoming tooth. In the normal position of the dogs the body of the tooth bears against the face of the holding-dog and the legs of the tooth against the face of the feeding-dog.

When the tooth is lifted by the feedingdog, its upper edge bears against the under side of the pressure-bar 23 and lifts it slightly, and when the feedingdog descends the tooth so lifted will be caused to return simultaneously by the downward pressure of the springs 28 of said pressure-bar. Thus the series of teeth are maintained always in proper working relationship to the spacing-dogs and at the same time are prevented from accidental detachment either in the transportation of the machine or in the use thereof. If it should be desired at any time to remove one or more of the teeth for any purpose, the pressure and confining bar may be readily detached.

For the purpose of releasing the rack from the spacing-dogs for rapid movements of the carriage in either direction, a release-bar 55, supported by obliquely-disposed hangers 56, is arranged with its upper edge to occupy the continuous slot formed bythe cut-aways 36 of the series of teeth and in a manner such that when said bar is lifted all of the teeth may be simultaneously raised thereby and to a height such as to carry the legs of all the teeth above the top of the feeding-dog and the bodies of all of said teeth above the top of the holdin g-dog, which latter is slotted vertically for the accommodation of the releasebar, as shown more particularly at Figs. 5 and 1l.

The left-hand end of the release-bar is connected by a vertical link 57 to a horizontal arm 58, projecting outwardly from a sleeve 59, mounted upon a pivot 60, supported in bearings in ears 6l, rising froma stand 62, se-

cured to the carriage, the said sleeve being adj ustably attached to said pivot by a screw 63, passing therethrough and binding at its point upon the surface of said pivot, which latter is provided with an integral forwardlyextending bent arm 64, terminating at its front end in a pin orpivot 65, arranged at right angles to the pivot 60. The sleeve is made rotatively adjustable upon thek pivot 60, in order that the angular position of the arm 58 may be changed if needed and the releasebar adjusted to lift the series of feed-teeth at the proper time and to the required extent.

The pin or pivot 65 passes through a head or block 66 on the rear end of a key-lever 67, pivoted vertically at 68 in a bracket 69, attached to the left-hand end bar 70 of the platen-carrier, and which lever has also a coiled returning-spring 7l.

rlhe block is formed at its rearside with a horizontal slot or passage-Way 72 and with seats 73 and 74 for the pin or pivot 65, which at its inner free end is formed witha head 75, which bears against the inner side or face IOO IIO

of the block, and which is of such a diameter or size as to prevent it from passing through the openings in said block and thereby cause said head or block to form a shoulder or means for the block to bear against, whereby, when the finger-lever 7l is released, the arm Gt and the connections back to the releasebar are caused to ret-urn with said linger-lever to their normal positions. The purposes of the slot and seats in the block will presently appear.

Upon the carriage l0, near each end, is screwed an arm 76, which at its forward end is formed or provided with an open hook 77, the throat of which is vertically disposed. lVithin these hooks rest the back rod 7 S of the platen carrier or frame, thus providing a hinge-joint for the latter whereby it may be turned up to a vertical position for inspection or correction of the work. Upon said back rod 7 S are affixed collars 7 9 to prevent any independent endwise movement ofthe platencarrier, and for the purpose of preventing any accidental detachment of said carrier from the hooks there are provided two keepers SO, one at each hook, and consisting of a plate, pivoted at Sl upon the arm 7G, and a downwardly-projecting iinger 2, which enters the throat of the hook and terminates at about the surface of the hinge-rod 7 8. When, however, it may be desired for any purpose, as for cleaning the types or repairing the machine, to detach the platen-carrier, this may he readily accomplished by swinging the keepers about their pivots, as illustrated at Fig. 2, thus removing the obstructing fingers from the hooks, but the platen-carrier cannet be detached until it is turned up to a vertical position on account of the release-key mechanism, and for the purpose of enabling' such detachment to be effected the slot or passage-way 72 is formed in the block of the release-key lever. In the down or working position of the platen-carrier the pin 65 occupies the seat 7 3 at the back of the passage-way 72, and is arranged axially of the hinge-rod 7S of the platen-carrier, so that when the platencarrier is turned upto a vertical position the bloei; turns or pivots about the pin G5, which remains in its seat. lVh en the platen-carrier is turned up to a vertical position or through an are of about ninety degrees, the normally horizontal passage-way is turned down to a similar extent or te a vertical position, and into the plane of the throats of the hooks, as shown at Figs. 2 and a, and in this position of the parts, the obstructing fingers having been swung aside, the platen-carrier may be readily detached from the machine, the hingerod passing up out of the hooks and the block slipping up past the pin G5. \Vhen it may 4be desired to replace the carriage, the reverse of this operation is of course performed.

In the carriage-releasing operation, when the forward linger end of the key-lever G7 is pushed toward the end bar of the platencarrier to raise the release-bar, the outer side of the block bears against the vertical portion of the arin (il and causes it to rock, turn the pivot GO, lift the arm 5S, and, through the link 57, elevate the release-bar, and in order to permit this rocking and rising action of the depending crank-arm G4: the block is eut away or slotted obliquely from the seat 73 to the seat 74C, so that the pin may pass from the seat or slot 7 3 to 74, and when the finger-lever is released the pin passes down again te its seat 73 as the remaining parts return to their normal positions.

The platen 83 is mounted to rotate as usual in the frame or carrier and is provided with a pressure-roller 8l, which is supported by the usual sprii'lg-pressed hangers 85, mounted on the back rod 7 8, the forward ends of the hangers supporting a longitudinal scale or pressure bar SG and also circumferential paper-guides S7, one near each end of the platen.

On the front round rod of the platen-carrier is mounted a supplemental adjustable paper or envelop guide 88, which is preferably attached by a screw to a sleeve fhadapted to slide on said rod. In order to prevent said paper or envelop guide from dropping or turning down independently, a rod Si() is attached to and arranged beneath the front rod of the platen-carrier for the guide SS to bear upon.

For the performance of column or tabular work any one or more of the feed-teeth may be formed or provided with a slot 0l about centrally of the body portion, as shown at Fig. 13, so that when the release-bar is lifted it will pass up into said slot and fail to raise such tooth, whereby when the tooth reaches the holding-dog it will contact therewith and arrest the movement of the carriage. For eX- ample, one such column-tooth 92 may occupy the fifteenth position and another the sixtieth place on the rack. In doing billwork, for instance, the date may iirst be written and then the release-key operated and the carriage caused to move quickly until the fifteenth tooth strikes against the holding-dog. Then the item may be written and the release-key operated again to enable the carriage to run swiftly until the sixtieth tooth is arrested by the holding-dog, after which the amount may be written in. Thus in all succeeding lines of the bill the writing of the items will coinmence at l5 and the writin g of the amounts at GO. Of course there may be as many such teeth 92 as may be desired, and they may be variously positioned, in accordance with the character of the work to be performed. For the purpose of facilitating the setting of the column-stop teeth the carriage is preferably graduated and numbered to correspond with the maehinescales and with the letter-spacing of the carriage, as illustrated at Figs. l, 2, and l0. By combining the ball-bearing carriage and the independently-movable feedteeth a light, easy-running, and noiseless carriage is produced.

To facilitate the return` IIO movements of the carriage, the holding and feeding dogs are beveled or inclined on their tops.

W'hen the stops 49 are thrown in to operative position the carriage may be fed two spaces at a time. Y

Various improvements herein shown, but not claimed, are claimed in my aforesaid prior applications.

Without departing from the spirit of my present invention numerous changes may be made, and I desire to be understood as not limiting myself altogether to a machine containing all of my various improvements, as some of them may be used without others and in a machine widely different in plan Vand design from that herein shown.

In my aforesaid other applications I have shown` and described and made other and broader claims for various features set forth in this application relating to the escapement mechanism and the carriage mounting, and hence I do not wish to be considered as dedicating or abandoning any features of invention disclosed herein and'which are made the subjects-matter of my said other applications. The claims in this case are limited to features not shown in said other cases.

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

l. In a type-writing machine, the combination of guide-bars having ball-.bearin gs, an

intermediate carriage having ball-bearings,-

antifriction-balls arranged on opposite sides of said carriage, and a ball-holder connecting all of the antifriction-balls together.

2. In a type-writing machinefthe combination of guide-bars having ball-bearings, an intermediate carriage having ball-bearings, antifriction-balls arranged on opposite sides of said carriage, a ball-holder connecting all of the antifriction-balls together, and a platencarrier connected to said carriage.

3. In a type-writing machine, the combination of guide-bars having ball-bearings, an intermediate carriage having ball-bearings, two antifriction-balls arranged on one side of said carriage and one antifriction-ball arranged on the opposite side thereof, and a ball-holder consisting of a longitudinal bar constructed to embrace the two antifrictionballs on one side and a transverse arm constructed to embrace the single antifrictionball on the opposite side of saidcarriage.

4. In atype-writing machine, the combination of guide-bars having ball-bearings, an intermediate carriage having ball-bearings, antifriction-balls, a ball-holder, and means for cooperating with said ball-holder to maintain it and the antifriction-balls in proper relationship to the carriage.

5. In a type-writing machine, the combination of fixed guide-bars having ball-bearings, an intermediate carriage having ball-bearings, antifriction-balls, a ball-holder for maintaining all of said antifriction-balls in a fixed position relatively to one another, and lugs adapted to cooperate with said ball-holder to maintain it and the antifriction-balls in proper relationship to the carriage.

6. In a type-writing machine, the combination of iiXed guide-bars having ball-bearings, an intermediate carriage having ball-bearings, antifriction-balls, a ball-holder, and a lug on said carriage adapted to move said ball-holder toward the right during the return movement of the carriage in case the said ball-holder should lose its proper relative position to the carriage during the movement of the latter toward the left.

'7. In a type-writing machine, the combination of fixed guide-bars lhaving ball-bearings, an intermediate carriage having ball-bearings, antifriction-balls, a ball-holder, and a lug on said carriage adapted to move the ball 'holder toward the left to adj ust it to proper position relatively to the carriage.

8. In a type-writing machine, the combination of iiXed guide-bars having ball-bearings, an intermediate carriage having ball-bearings, antifriction-balls, a ball-holder composed of a longitudinal bar and a transverse arm, and lugs arranged on said carriage to contact with said arm and move the ballholder toward the right and the left.

9. In a type-writingmachine, the vcombination with a feed-rack comprising a series of independently-movable feed-teeth, and suitable dogs to cooperate therewith, of a pressure and confining bar extending the entire length of said series of teeth and adapted to maintain them always in proper working relation to the dogs and to also prevent their accidental detachment.

10. In a type-writing machine, the combination with a feed-rack comprising a series of independently-movable teeth, and suitable dogs to cooperate therewith, of a springpressed bar covering the entire series of teeth.

ll. In a type-writing machine, the combination with a feed-rack having a series of independently-movable teeth,and suitable dogs ,to cooperate therewith, of an overlying bar forked at its ends to embrace ears rising from the feed-rack, and springs connected at their ends to said bar and to said ears.

l2. In a type-writing machine, the combination of a carriage having open hooks, a platen-carrier hinged thereto, and movable keepers operating to prevent accidental detachment of said platen-carrier.

13. In a type-writing machine, the combination of a carriage having open hooks, a platen-carrier hinged at its back rod to said hooks, and keepers consisting of pivoted plates and depending fingers.

14E. In a type-writing machine, the combination of a carriage having a series of independently-movable feed-teeth, suitable dogs tocoperate therewith, a release-bar for simultaneously raising allot' said teeth, to free them from said dogs, the link 57, the pivoted arm 58, the rocking crank-arm, 64:, a platen- IOO IIO

carrier connected to said carriage, and a keylever attached to said plateinearrier and connected at its rear end to the depending free end ofthe rocking crank-arm G4.

l5. In a type-ivriting machine, the combination with a ieedaaek having a series of independently-inovable teeth, and suitable dogs to cooperate therewith, of a rclease-bar arranged in notches in said teeth and adapted to simultaneously lift them all, the link 57, the arm 58, the sleeve 59, the pivot (50, the erank-arm Gl made as a continuation of said pivot and connected at its free depending` end to the inner end of a key-lever attached to a platen-carrier.

lll. In a type-writing machine, the combination with a feed-raekhavinga series of independently-m ovable teeth, and suitable dogs to cooperate therewith, of a release-bar a1'- ianged in notches in said teeth and adapted to simultaneously lift them all, the link 57, the arm 58, the sleeve 59, the pivot GO, the depending crank-arm Gl having a pin 65 and a head 7 (l, and a key-lever attached to a detachable platen-carrieil and provided at its inner end with a bloek having apassage-way 7 2 and the seats 7 and 7l, arranged substantially as shown.

17. In a type-writing machine, the combination with a carriage having open hooks, a platen-carrier hinged thereto, a releasekey attached to said platen-carrier and having a block at its rear end formed with the passageway 72, and the seats 7 3 and 74, the depending crank-arm Ul, a release-bail connected thereto, and an overlying series of independently-movable feed-teeth mounted upon said carriage.

I8. In a typeswriting machine, the combination ot a carriage, a platen-carrier detachably hinged thereto, a 1elease-key1neehanism connected to said carriage and to said platen-carrier and separable on the hin `:ge-line of the platen-earrier- Il). In a type-Writing machine, the combination of a carriage having a series of independently-movable teethhavingeach abody, lateral shoulders, depending legs and a notch or cutaway, and one or more of said teeth having also a vertical slot as 91, and a bai' adapted to lift all of said teeth excepting the tooth or teeth having said slot 91.

20. In a type-Writing machine, a coluninstop tooth consisting of a body, lateral shoulders, depending legs, an intermediate notch or space, and a slot as 91.

2l. In a type-writing machine, the combi nation of a platen, a platen-carrier, an en velop-gnide supported upon and adapted to slide longitudinally of the round front rod ot said platen-carrier, and a supplemental rod attached to the said platen-rod and underlying the said envelop-guide to prevent any ro tation thereof.

Signed at Bridgeport, in the county of Fairfield and State of Connecticut, this 24th day of September, A. D. 1891.

CHARLES W. WALK ER.. Witnesses:

Il'. M. RomNsoN, FAN-NY MeLAnEN.

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