US1052758A - Type-writing machine. - Google Patents

Description

C. H. SHEPARD.

TYPE WRITING MACHINE.

APPLICATION rum) 001211. 1912. 1,052,758. Patented Feb. 11, 1913.,

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c. H. SHEPARD. TYPE WRITING MACHINE.

APPLIUATION FILED 00T.11, 1912.

Patented Feb. 11, 1913.

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07 MG/Q 1-ll5 ATTORNEY UTED STATES PATENT ori ro,

CHARLES H. SHEPARD, OF NEW YORK, N. Y.) ASSIGNOR TO UNION TYPE\V RIT ER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Feb. 11, 1913.

Application filed October 11, 1912. Serial No. 725,159.

To all whom it may concern:

Be it known that I, CHARLES H. SHEPARD, citizen of the United States, and resident of the borough of Manhattan, city of New York, in'the county of New York and State of New York, 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 carriage es'capement mechanism.

The main object of my invention, generally stated, is to provide a rapid escapement in chanism which is comparatively simple i reliable in use.

A further object of my invention is to provide an improved construction of the character specified in which parts may be readily adjusted to nicely regulate the op .eration of the escapement.

Another object of the invention is to pro vide an improved roller dog construction in which the action of the roller holding dog ,may'be variedand nicely timed with refer-v- 'ence to the release of the .stepping-dogf A still further object-of my invention is to. provide an escapement in which but little noise is produced byitsactuation and 7 .by the return movement of the carriage.

To the above and otherends which will lereinafter appear, my invention consists in the features .of construction, arrange ments of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims. l

In the accompanying drawings, in which like reference chfi'rzictrs'indicate likeparts, Figure 1 is a fragmentary fore'and aft vertical sectional ne of one form of typewriting machine embodying my invention, only so much of the typew'riting machine invention in its embodiment therein. -Fig. 2 is an enlarged detail rear elevation, with parts in section, of a portion of the escapement mechanism. -Fig. 3 is a detail side view of the roller dog and its carrier or dog rocker. Fig. 4 is a fragmentary dia- ,grammatic view of the roller dog and esc'apement wheel, the view showing the parts as they appear when viewed from the direction of-tlee arrow inlfig. 2, and as though the stepping mentary rear elevation ofa portion of the- .7 escapement mechanism, showing the parts construct-ion and is efficient and meshes with a feed pinion 11.

beingshown as is necessary to illustrate my the teeth of the escapement wheel were in section, such section being taken on the line of Fig. 2. Fig. 5 is a detail side view of the returning spring --for the stepping dog, the view showing the manner of supporting the spring and connecting it with 0g. Fig. 6 is a detail fragas they appear when the stepping dog is released from the escapement wheel.

I have shown my invention embodied in a No. 10 or No. 11 Remington machine, although some of the parts of that machine are only. conventionally represented. It should be understood, however, that the invention may be embodied in various styles of typewriting machines.

The frame of the machine comprises a base 1, corner posts 2, and a top plate 3.

A cylindrical platen 4 is mounted in a carriage 5, the latter being supported on antifriction balls or rollers 6 Which are received the usual manner to a spring drum 7 by.

which the carriage is propelled in the direction of its feed. I Rearwardly extending arms 8 are pivoted at 9* to the carriage and are connected at their rear ends to a feed rack 10 which This feed pinion is fixed to the forward end of a shaft 12' received in a bearing 13 provided with a base or foot piece 14 by which the bearing may be securedto the top plate .of the machine. The rear end of the shaft 12 has fixedly connected thereto an escapeme'nt rack or whef 15,. .Thus the escapement wheel has a rearwardly extending hub 16 tapped to receive set screws 17 which extend through the tapped openings and hear at their inner-ends against flattened faces 18 on the shaft 12 in order to fixedly connect the escapement wheel to said shaft,

Key levers 19 are fulcrumed on a fulcrum bar 20 and extend -to the keybo-a'rd of the machine where they are provided with finge-rckeys 21'. Each key lever is connected by links 22 and 23 and a sub-lever 24 to a type bar 25 pivoted to swing upwardly and rear wardly and to strike agaiust the front face of the platen 4. Extending transversely beopenings in the base of the machine."=' A cen trally disposed rearwardly projecting crank arm 31 extends from the rock shaft and is connected to an upwardly extending link 32.

The upper end of this link is pivoted to. a

forwardly projecting arm 33 of a dog rocker, designatedas a whole by the reference numeral.34. A shaft 35, which is fix; edly connected to the dog rocker, is sup-' ported at itsends in bearings'36 adjustably mounted in bearing openings in lugs 37 and secured in theiradjusted positions by set screws 38. The lugs 37 project rearwardly from a bracket plate 39'sec'ured to the frame:

of the machine. A depending pin 40 on the dog rocker is connected to one end of a corn tractile spring 41 which'has its opposite end connected to a fixed'bracket arm 42 secured to the-bracket plate 39. The dog rocker 34 likewise has an upwardly extending dog carrying arm 43 which is tapped to receive a screw stop 44 which extends through to the forward-side of the dog rocker where it is adapted to cooperate with a projection 45 on the bracket plate 39 to limit the pivotal movement of the dog rocker on t he depression of a key. The return-movement of the ried by-the arm 33 of the dog roekei' an'd cooperating with the projection to :arrest the dog rocker when pressure on the-finger:

dog rocker is limited. by a' 'se'tscrewf46-car key is'released and the rocker is returned to" spring 41. A look nut 47 may be employed to secure the screw stop 44 against accinormal position under the power of'the dental displacement from its adjuste'dposition. In a like manner a lock nut-18 may be secured to cooperate with'the set screw 46 to secure it in its adjusted position. The upper end of'the upright arm 43 of the dog rocker is slotted, as at 49, to receive a step ping dog 50. The slotted portion. of the rocker forms two arms, one on each side of the stepping dog and each ofthese arms is slotted at 51 for the reception of a pin 52 which projects laterally from the stepping dog. In this manner the normally engaged stepping dog is mounted for both sliding and pivotal movement in the plane thereof on the dog rocker and is limited-in its pivotal movement in one direction-by an abutj ment 53 projecting from the dog rocker. A spring 54 is looped-at its lower end, as at 55, and is secured at its looped end to the dog rocker by a screw 56. v The opposite end of the spring extends into an opening 57 in the loose or stepping dog. It will be seen that 5 theconstruction' of the spring is such that it exertsi aiforce longitudinally of the spring as .wellas transversely thereof in order to 'retji rn thestepping dog to normal position I and'to'render the spring. efiective both to slide the dog and turnit-on its pivotal sup port. However, the arrangement is such that in the .normal position of the parts I shown "in Fig; 2, the bottornwall of. the' opening 57does not contact with the upper end-of the spring-54. The ettect o'fthis is that when the. stepping dog 50gis released from the escapementiwheel, it will receive 'a turning movement onitspiyot 52, as well as a sliding movement .infyitejiguideslot; the

dog moving from the 2 to that'indicated in t1 the fact that l 'sho\vn in Fig. This-is due to Figs. 2 and 6),andxt-he'engaging-end of the dog 50 being heavier than its opposite end turns the dog by gravity on its pivot 52 until I the-bottomof the opening 57 contacts with the upper end of the spring 54, thus arresting the dog in the position-shown in Fig; 6.-

The purposeof this, is two-fold. In the'first place the stepping dog when released from the wheel is not snapped by spring against-a fixed abutment to limit the-move ment'of thedog but's ich movement is lim-f jited thespring itselfand consequently there is little or nofnoise. produced whenthe steppingdog is released and .'-springs forwardly. In the second place there is a lost motion provided between the upper end of thespring 54 and thebottom [wall of the opening 57 when the parts are in the normal position shown in Fig. 2-, so that if at this time the carriage should be moved back to begin a new line of writing, the backward rotation ofthe escapement wheel results in the rear inclined faces of the teeth 15 there of co-acting with the rear inclined face of the stepping dog, forcing the latter down below the' position shown in'Fig. 6. The first part: of this turning movement of the dog to the Fig. 6 position takes up the lost motion and the last past of the movement is slightly below the position shown in Fig. 6 to clear the teeth of the escapement wheel. It isthe last part of the movement alone of the dog which is exerted longitudinally against the spring 54 so that only a very slight return movement of the dog under the power of the flexed spring is effected and but very little noise is produced during the backward movement of the cscapement wheel, and yet there isa reliability of action of the parts. As soon as a tooth on the escapement wheel passes the stepping dog, the latter is immediately returned to the Fig. 6 position to coact with the teeth of the escapement wheel to prevent a forward movement thereof. \V hen the pressure of the carriage spring is exerted through the v ment of the rocker.

escapement wheel against the stepping dog,.

it assumes the position shown in Fig. 2

A holding dog, which in the present instance is in the nature of a roller dog 58, is pivoted on a shouldered pivot screw 59 and so presented to the teeth of the escapement wheel that the periphery of the roller dog constitutes its working face. This holding dog is mounted and supported independently of the stepping do and independently of the'dog rocker 34. bus the shouldered ivot screw 59 is received at its threaded end in a tapped opening in an upright arm 60 of a second dog rocker, which is indicated as a whole by the reference numeral 61. The dog rocker 61 comprises in addition to the upright arm 60 a pivot rod 62 to which the upright arm is riveted or otherwise fixedly connected. A. horizontally disposed memher or portion 63 projects from the upright arm 60 and carries a depending arm 64. Thepivot rod 62 is received in bearing openings in arms 65 and 65 of a bracket 66. A collar 67 surrounds the pivot rod 62 adjacent to the bearing arm 65 and is fixed to the pivot rod by a set screw 68. It will thus be understood that a longitudinal movement of the pivot rod 62 in its bearings is prevented by the collar 67 bearing against one side of the bracket arm 65 and the upright arm 60 of the rocker bearing against the o posite side of the bracket arm 65*. A coile spring 69 surrounds the pivot rod 62 and is connected atone end to the 5 bracket 66 and at its opposite end to the collar 67. The power of this spring is exerted to maintain the dog rocker 61 in the normal position where the roller dog 58 is maintained out of the path of the teeth in 0 the escapement wheel, as illustrated in Fig. 1. An adjustable screw stop 70 is received in a tapped opening in an 0 I set portion 63 of the part 63 of the dog rocker 61. The lower end of this screw stop co-iacts with the 5 top plate 3 of the machine to limit the return movement of the dog rocker 61 under the power of the spring 69. From an inspection of Fig. 3 it will be observed that the screw stop 70 is offset from the pivotal center of the dog rocker 61 in order to operate effectively to arrest the return move- It will also be observed from an inspection of Figs. 1 and 2 that the depending arm 64 of the rocker 61 extends in the path of movement of an adjustable abutment which is in the nature of a screw 71 received in a tapped opening in the dog rocker 34 and extending therethrough. This screw may likewise be provided with a lock nut 72 to prevent an accidental displacement of the screw. The bracket 66 by which the dog rocker 61 is supported is fixed to the frame of the machine in any suitable manner. In the present instance, it has been convenient to secure the bracket to the base 14 of the bearing for the escapement wheel shaft, by means of screws 73. From the foregoing description it will be understood that the rocker 61, and the roller dog 58 carried thereby, are supported entirely independently of the dog rocker 34, and the dog carried thereby, although the rocker 61 is under control of the rocker 34.

In the operation of the esca ement a depression ofa printing key is e ective to depress the universal bar 26, thereby turning the do rocker 34 to move the upright arm thereo forwardly transversely of the plane of the feed rack or escapement wheel. The effect of this movement it to disengage the stepping dog 50 from the escapement wheel and the dog receives a forward movement,

aided by its spring 54, to the position shown in Fig. 6, so as to be in a position to cooperate with the next advancing tooth of the escapement wheel when the dog rocker 34 returns to its normal position. During the movement of the dog rocker 34 just described the adjustable contact 71 will eugage the depending arm 64 of the indrapendently supported dog rocker 61 and e eat a rearward movement of the roller dogtransescapement Wheel against letter feed movement after it has been released by the stepping dog. As soon, however, as pressure is released on the depressed finger key, the escapement wheel will cam the roller dog out of the path of the engaged tooth thereof and movement thus transmitted to the dog rocker 61 will likewise be transmitted to the dog rocker 35 to speedily return both of these dog rockers to normal position. It will be understood of course that the respective sprin s 69 and 41 for the dog rockers are also e ective to aid in the restoration of the rockers to normal position.

By the construction and arrangement of the parts, the adjustable means between the two dog rockers, and the mountin and supporting of the roller dog indenen ently of the stepping dog, I am nabled to regulate the parts so that i desired an initial movement of the dog ro ker may be effected independently of the rocker 61 and the latter may be taken up at any portion of the stroke of the dog rocker 34 to nicely regulate or time the interpositioning of the roller dog in the path of the advancin tooth of the escapement wheel, and wit reference to the instant when the escape ment wheel is freedjrom control of the.

stepping dog, By this arrangement I am enabled to adjust the parts so as to provide various extents of drop at the down stroke of the key and otherwise nicely regulate and control the action of the escapement mechanism. Thus, for example, it will be understood that the further forward the contact screw 71' adjusted, the greater will be the extent of rearward throw of the roller dog, and the less \will .be the extent of the drop when the carriage is let off or released from control of the stepping dog This will be more clearly understood from an inspection of Fig. 4. If, for example, it be assumed that the roller dog 58 is non mally maintained in the full line position and that the adjustment of the contact screw 71 is such that upon a depression of a printing key the roller dog will be shifted to the dotted line position a when the stepping dog is released, it will be understood that the working face 5 of the advancing tooth of the escapement wheel will drop from the position shown in Fig. 4 to the point on the periphery of the roller dog indicated at c. This atfords considerable drop of the wheel during the down stroke of the key. If,'on the other hand, the adjustment of the screw 71 is such that the roller dog will be shifted from the full line position in Fig. 4 to the dotted line position (i at the down stroke of the key, then the periphery of the roller dog will be brought to a point where it will almost contact with the working face 6 of the advancing tooth of the escapement wheel so that little or no drop of' the .escapement wheel is afforded. These are merely taken as two examples of the numerous adjustments that may be effected. It will be understood, therefore, that the parts may be nicely adjusted to control or regulate the action of the escapemcnt, and that although an ordinary feed is provided the escapement is very rapid and efiicient.

The power of the carriage spring exerted through the escapement wheel on the roller dog is effective to cam the rocker 61 back to normal position as pressure is released on the depressed printing key and the pressure thus exerted on the rocker 61 is likewise efi'ective to return the dog rocker 34 to normal position. From this it will be understood that the power employed to movethe carriage is exerted through the esoapement wheel to return both of the dog rockers to normal position. Moreover, it will be understood that by the present construction the roller dog may be maintained normally in a position where it just clears the path of the teeth of the escapement wheel, as shown in Fig. 1, so that a very slight rearward movement of the roller dog is effective to bring it into the path of the teeth of the escapement wheel and that this is'true no matter how much movement may be necessary or found desirable to release the stepping dog from engagement with the j escapement Wheel. If desired the parts may be so arranged that the adjustable contact 71 will not take up the dog rocker 61 until about the last part of the movement of the dog rocker 34. The power of the spring 69 and the weight of the dog rocker 61 and the parts carried thereby will, under these circumstances, offer no resistance to the depression of the key at the initial part of the stroke and a rapid, light and efficient escapement mechanism is provided wherein the wear on the holding dog is distributed throughout the periphery thereof, it being understood that the periphery constitutes the working face of the roller dog and is constantly changing, due to the engagement of the teeth of the escapement wheel therewith. Thus as pressure is released on a printing key, the advancing tooth of the escapement wheel, contacting with the roller dog, tends to turn the latter as it moves back to normal position with its carrier or rocker, thus presentinga new surface to the action of the escapemcnt wheel at the next printing operation.

Various changes may be made without departing from the spirit of my invention.

'hat claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a carriage; and escapement mechanism therefor comprising a feed rack, a dog rocker, a feed dog carried by said dog the plane of the feed rack, supported independently of the dog rocker, and adjustable means intermediate the dog rocker and said independently supported ter by the dog rocker.

2. In a typewriting machine, the combination of a carriage; and escapement mechanism therefor comprising a feed rack, a dog rocker, a feed dog carried by said dog rocker, and a roller dog cooperative with said feed rack and supported independently of said dog rocker but under control thereof.

3. In a typewriting machine, the combination of .a carriage; and escapement mechanismtherefor comprising a feed rack, a dog rocker, a feed dog carried by said do rocker, a roller dog cooperative with sai feed rack and supported independently of said dog rocker, and adjustable means intermediate said do rocker and said independently supported roller dog and through which control of the roller dog by the dog rocker is efiected.

4. In a typewriting machine, the comhination of a carriage; and escapement mocha nism therefor comprising a feed rack, a (log rocker; a feed dog carried by said rocker and moved thereby transversely of the plane of rocker and moved thereby transversely of 4 a second feed dog dog for controlling the actuation of the latthe feed rack, a second feed dog supported 'independently of said dog rocker and mounted for movement transversely of the plane ofthe feed rack, means by, which said dog rocker is effective to control the transverse movement of the independently supported dog, and adjustable means independent of said dog rocker for limiting the return movement of the independently supported dog.

former isefi'ective tocontrol theg transverse movement of the latter. v

6. In a typewriting machine, the combination of acarriage; andescapement mechanism therefor comprising a feed rack, a dog rocker, a feed dog carried by said rocker an moved thereby transversely of the plane of the feed rack, a second feed dog supported independently of said og rocker and ,mounted for movement transversely of the plane of the feed rack, adjustable means intermediate'said dog rocker and independently supported dog and by which the former'is effective to control the transverse movement of the 'latter, and adjustable means independent of said dog rocker-for limitingthe return movement of said independently supported dog.

7. In a typewriting machine, the combination of a carriage; and escapement mechanism therefor comprising a feed rack, a dog rocker, a feed dog carried by said rocker and moved thereby transversely of the plane of the feed rack, a roller dog supported independently of said dog rocker and mounted for movement transversely of the plane of the feed rack, and means by which said dog rocker is efiectiveuto control the transverse movement of the roller dog.

8. In a typewriting machine, the combina 'tion' of a carriage; and escapement' mechanism therefor comprising a feed rack, 21 dog rocker, a feed dog carried by said rocker and 55 moved thereby transversely of the plane of the feed rack, a roller dog, the-periphery of which constitutes it working face and which.

roller dog is supported independently'of said dog rocker and mounted for movement transversely of theplane of the feed rack 'into and out of the path of the teeth thereof, and means by which said dog rocker is ,etfective to control ofthe roller dog. e 9. In a typewriting machine,'the combina- 5. In a typewriting machine, the combine; v

of the the transverse movement tion of a carriage; and escapement mecha' nism therefor comprising a feed rack, a dog rocker, a feed dog carried by saida'ockcrand *moved thereby transversely of the plane of the'feed rack, a spring returned roller dog, the periphery of which constitutes its W01k ilig face and which roller dog is supported independently of said dog rocker and mounted for movement transversely of the plane of the feed rack into and out of the path of the teeth thereof, and adjustable means intermediate the dog -roeker and roller dog and through which said dog rockeris effective to control the roller dog in its transverse movements. 10. In a typewriting machine, the combination of a carriage, and escapement mechanism therefor comprising a feed rack. a dog rocker mounted for movement transversely of the plane of the feed rack, a feed dog carried by said rocker, a second i'pdepend ently supported dog rocker mounted for movement transversely of the plane pf the feed rack but controlled in such movement by said first mentioned dog rocker, and a feed dog carried by said second "dog rocker.

11. In a typewriting machine, the combination of a carriage; and escapcment mechanism therefor comprising a feed rack, a dog rocker mounted for movement transversely of the plane ofthe feed rack, a feed dog car- -ried by said rocker, a second independently supported dog rocker mounted for movementtransversely of the plane of the feed inch, :1 feed dog carried by said second dog, rocker, and adjustable means intermediate said dog rockers and through which'one dog rocker is effective to control the movementof the other.

12. In a typewritingmaehine, the combination of apower driven carriage; and eseapement mechanism therefor comprising an escapement wheel, a key controlled spring returned dog rocker mounted to move transversely of the plane of the esoapeuient wheel, a stepping dog carried thereby, a second do; rocker supported independently of said first mentioned dog rocker. an independent spring for-returning said "second dog pendently supported dog rocker and ll'\ able therewith transvcrselv of the plane of the escapement wheehand means by which the first mentioned dog rocker is effective to confirol the movement of the second dog r100 er. I y 13. In a typewriting machine. the combination of a power driven carriage; and escapement mechanism therefor romplising an esca'pement wheel, a key controlled spring returned dog rocker mounted to'move transversely of the plane of the esrapement wheel,

a stepping dog carried thereby. a second dogrocker supported independently of hilltl first i mentioned dog rocker, an independent rocker, a roller dog carried by said iude- 115 v capement mechanism therefor comprising capement mechanism therefor comprising an with transversely of the plane of the es spring for returning said second dog rocker, a roller dog carried by said independently 1 supported dog rocker and movable therewith transversely of the plane of the escapemcnt wheel, the peri hery of the roller dog constituting its wor ing face, and ad justable means intermediate the do rockers and through which the rocker for t e. roller dog is controlled in its movements by the key controlled dog rocker.

14. In a typewriting machine, the combination of a power driven'carriage; and esan escapement Wheel, a key controlled spring returned dog rocker, a pivoted and sliding stepping dog carried by said dog rocker and movable therewith transversely of the plane of the escapement wheel, a second dog rocker supported independently of said first mentioned dog rocker, an independent spring for returning said second dog rocker, a roller dog carried by said independently supported dog rocker and movable, therewith trans-' versely of the plane of the escapement wheel under control of the key controlled dog rocker, and ameans independent of the-key controlled dog rocker for limiting the re turn movement of the second dog rocker.

15. In a typewriting machine, the combination of a power driven carriage; and esescapement wheel, a key controlled s ring returned dog rocker, a pivoted and sliding stepping dog carried by said clog rocker and movable therewith transversely of the plane of the escapement wheel, a second dog rocker supported independently of said first mentioned dog rocker, an independent spring for returning said second dog rocker, a roller dog carried by said'independently supported dog rocker and movable therecapement wheel, the peri hery of the roller dog constituting" its wor ing face, anda'l' justable means intermediate the do rockers and through which the rocker for the roller dog is controlled in its movements by the key controlled dogrocker.

16. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising a feed rack, a feed dog cooperating there- /with, and a spring for said dog, there being a lost motion between the spring and dog in the normal position of the parts.

17. In a typewritin machine,.the combination of a power driven carriage; and escapement mechanism therefor comtprising a feed rack, a feed dog cooperating erewith,

'- 1 ,osawss said dog beingmounted for sliding and pivotal movement, and a single spring for effecting both a sliding and a pivotal move-' ment of the dog, there being a lost motion between said dog and spring during one of capement mechanism therefor comprising a feed rack, 9. etc ping dog, and a spring for advancin sai ste ping dog, the spring itself limlting the a Vance movement of the do 1%). In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising a feed rack, a stepping dog, and a spring for advancing said stepping dog, the power of the spring exhausting itself at the termination, of the advance movement of the dog to thus arrest the advance of the dog by the spring itself.

20. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising a feed rack, a stepping dog mounted for pivotal and sliding movement, a single I spring for effecting both a pivotal and a sliding movement of the dog, there beinga lost motion between the dog and spring in the pivotal movement of the dog.

21. In a typewriting machine, the combinationof a power driven carriage; and escapement mechanism therefor comprising a feed. rack, a stepping dog mounted forpivotal and sliding movement, a single spring for effecting both a pivotal and a sliding movement of the dog, the advance-movement of the dog being limited by the spring itself.

22. In a typewriting machine, the comb1- nation of a power driven carriage; and es capement mechanism therefor comprising a feed rack, a stepping dog mounted for p 1v ota'l and sliding movement, a single spring for effecting both a pivotal and a sliding, advancing movement of the dog, the power of the spring exhausting itself: at the termination of the advance movement of the dog to thus arrest the advance of the dog by the spring itself.

Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York, this 10th day of O0- tober A. D. 1912.

CHARLES H. SHEPARD. Witnesses:

CHARLES E. SMITH,

Copies of this patent may be obtained for five cents each, By addressing the "Oomznissioner of Patents,

Washington, D. 0.

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