US998510A - Type-writer platen and other roller. - Google Patents

Type-writer platen and other roller. Download PDF

Info

Publication number
US998510A
US998510A US52060209A US1909520602A US998510A US 998510 A US998510 A US 998510A US 52060209 A US52060209 A US 52060209A US 1909520602 A US1909520602 A US 1909520602A US 998510 A US998510 A US 998510A
Authority
US
United States
Prior art keywords
disks
roller
backing
platen
felt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US52060209A
Other languages
English (en)
Inventor
Robert P Heron
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US998510A publication Critical patent/US998510A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens

Definitions

  • Hy invention relates to typewriter platens, to casters and to other rollers in which the characteristics secured by it are desirable.
  • the roller in both the illustrated embodiments the roller consists of felt disks of special shape compressed together to form a surface of higher density than the backing.
  • the degree of absolute density of surface and backing may vary widely as may also their relative density, according to the needs to be met and the characteristics and properties required in rollers designed. for different uses.
  • the two embodiments shown in the drawings illustrate this. Obviously the caster must be much more dense than the platen.
  • the body of my roller is composed of felt or similar material so arranged that it has a surface under a greater degree of compression and consequently of greater density than the portion of the material within the said surface, which Iterm the backing.
  • the roller as shown is made of a plurality of felt disks. the fibers of which, run toward and from the periphery of the roller so that the disks have greater resisting power and so that in a platen the type strike upon the ends of the said fibers.
  • These disks are provided on one or both sides with cut out portions or depressions, the depth, extent and shape of which, may be varied but which serve to permit the outer portions of the disks to be more highly compressed than the inner portions so that a surface, whose depth and density can be varied, as may be found desirable, is produced.- In a platen this outer portion forms what I term a striking surface which has the requisite hardness and elasticity.
  • the felt I employ is unsized and is of considerable hardness even before compression, sized felt being objectionable.
  • the dry sizing is forced out as dust by the sharp' impact of the t vpe, and being furthermore harsh and likely to scratch the floor and to deteriorate when subjected to moisture, when used as a caster.
  • rollers formed of disks of compressible material it is difiicult to secure a smooth dense surface, but by the use of my invention this may be readily accomplished and a surfa'ce may even be secured of the exceedingly high density necessary in roller's whose function is to support weight without suttering deformation, the backing being suiticiently dense 'to support the surface properly.
  • ly invention consists in a roller, the preferable embodiments ofwhich are illustrated 'and'described herein, whether designed to sustain the impact of type-bars, to endure pressure, to uphold weight, or for other purposes within the scope of the claims.
  • Figure 1 is a bodying my invention.
  • Fig. 2 is a longitution. This figure illustrates interlocking disks.
  • Figs. 3. l and 5 are sectional views of pairs of disks of dilierent forms, but all embodyingmy invention, the pair of disks at the left. of each figure being shown before compression and the pair of" disks at the right o'l each figure being shown substantially as they will appear after compression. It is to be understood, however, that in order to illustrate the ditlerence in density of the ditl'erent parts of the disks. an exaggerated space has been shown between adjacent disks.
  • Fig. 5 is a perspective View of a caster embodying my invention.
  • Fig. 7 is a cross-section showing the wheel in its compressed or finished state
  • Fig. 8 is a similar view of the parts making up the caster wheel in their unas 'sembled position before they have been subjected to compression.
  • FIGs. 1 5 which illustrate the application of the invention to a typewriter platen
  • 1 isthe usual platen rod.
  • 2 is a tube thereon internally screw-thrtatded at its ends to cooperate with.
  • the externally s .:rew-threaded bushings 3, 3 which bear against the end plates n and 5 of which the, latter is the usual ratchet plate. These bushings are held in position on the rod by set screws 6.
  • the disks preferably of felt, which are assembled on the tube and without being moistened are then com-- pressed against one of the end plates by means of the other end plate, which is applied with the corres mnding bushing utter the disks are assembled and is made to comprt-ss them on the turning of the bushing, which by coon-th n of its thread with the ctirrcsponding thread on the tube 2, forces the disks toward the plate at the'othcr end.
  • the bushings are squared so that a wrench may l 2 applied to one or both of them and the disks compressed from one orboth ends ol the platen.
  • the disks have been suitably compressed, one of the end plates is removed and additional disks are placed on the tube and compressed as above. dcs riltcd until the striking surlacc is ol the desired density. The surface of the resultinn cylinder is then ground down to the desired diameter and all inequalities removed, the covering presenting a homogeneous unitary structure with a'hard smooth surface. shown in Fig. 2, the tube, plates, and bushings are so related to each other that alter the proper compression is secured, there i-r still space to permit turtlnar com pression should this laconic desirable in the use o1 the platen.
  • each being provided with a projection ll on the opposite side ol the disk to that in which the depression 10 is located and corresponding in general with the said depres ion. but being of less height than the depth of the depression.
  • the projections while not interfering with the desired ditl'crcnce in density. provide a special bacl ting for the striking surface and make the danger of a breaking through oi the outer sur" t'ace between adjacent disks more remote. This construction. also aids in maintainim. the disks in exact registry.
  • the form of disk shown in Fig. 4 is provided with a depression 10 on each of its surfaces and thisdeprcssion as shown is, like the depression and projection of the interlocking form of disk, right angular or disk shaped.
  • This form makes it possible to secure a. greater ditlerence between the density of the striking surface and of the backing than does the interlocking form as ordinarily constructed.
  • Fig. 5 shows a t'orm of disk on the order of that illustralt d by Fig. 4 which is dished out; on both sides.
  • the depressions dilier in shape and usually also in extent from those of the disk illustrated in the preceding ligurc.
  • This l'orm makes the transition from the striking surlace to the backing very gradual and makes it possible to employ a striking surlace ol less depth.
  • the dished portion might. extend to the Outer edge ol the disks but this would not. ordinarily be judicious since the striking surface might not be sulliciently strong.
  • the disks are conveniently and suitablyabout ⁇ i of an inch in thickness and are formed out of a single layer of felt so that the ends of the fibers are eX- posed to the type. This gives high resisting power against the blows of the type, which can not sink in objectionably or injure the platen. High density of the striking surface is also most important.
  • the size of the disks, their thickness, and the size and shape of their depressions depend upon the functions tobe performed by the individual roller and are chosen to that end.
  • the compression of the disks must be sufficient to make them practically unitary or homogeneous so that even the sharp point of the period if strikingfin the plane of-contact of adjacent disks, cannot be forced between the two disks to puncture the paper and injure the platen.
  • the caster wheel consists of the disks 7' haringht fore compression dished mounted on the sleeve or bushing 2 and retained in position by the plates 4' 5 against the edges of holes in the center of which the ends of the sleeve 2 are headed over at 1(3.
  • the more highly compressed surface or tread is designated by 8 and the backing by 9.
  • the thickness and number of the disks may be varied, and all disks in a given wheel need not necessarily be of the same thickness. Their size and number will of course depend considerably on the size of the finished caster and on the work it is to perform. Casters designed to support heavier weights are ordinarily larger and may be'denser.
  • the disks need not be cylindrical but may vary in contour according to the contour desired for the roller.
  • Figs. 1 and 6 the edges of adjacent disks areshown for clearness, although in fact the meeting point of adjacent disks would hardly be observable. While disks of various forms, such for instance as those illustrated in Figs. 3" and 4, may be used. I prefer to use those illustrated in Fig. 5 and in Fig. 8. In Fig. 7' which shows the disks under compression I have indicated the difference in density of the surface and backing but have shown the disks without intermediate spaces which would not in fact exist in the finished caster, the disks being to some extent merged together.
  • the elements making up the caster wheel are shown unassembled in F 8. They are assembled and compressed into the complete caster wheel in any suitable power press.
  • lateral expansion is suitably guarded against by the provision of a press chamber of the proper shape having unyielding walls, and any tendency of the end plates to embed themselves in the end disks may be prevented by providing each end of the press chamber with'an annular ring surrouruling the end plate and terminating in the plane of its inner face or preferably in a bevel beyond said face toward the disks.
  • ⁇ Vhile a caster wheel made with screw-threaded bushings like the ty jie-writer platens shown in Figs.
  • a roller comprising a covering constituting a surface and a backing, said covering being of the same material and substantially the same structin'e throughout and having its surface of greater density than the backing.
  • a roller comprising a support, and a compressible covering thereon, said covering presenting continuous material from the support to the periphery of the roller, and consisting of two portions of different densities, a backing extending from the support outward, and a surface of greater density than the backing.
  • a roller comprising contacting disks, each forn'iing-by continuous material a part of the Slll'ftlC. and the backing, the surface and-the backing being both under compression, and the surface being of greater density than the backing.
  • a roller comprising a covering of compressible material having contacting faces and constituting a surface and a backing, the backing having a part of one of the contacting faces cut away, and means for compressing the covering whereby the surface is made more dense than the backing.
  • roller con'iprising a support, a covering therefor of felt compressed and forming a compressed backing and a compressed annular portion surrounding it, said felt extending continuously from'the hacking into the surrouinliln annular )ortion and said annular portion being more highly compressed than said backing.
  • a roller con'iprising a support and-a covering of compressed felt disks forming a com pressed backing and a compressed annular portion surrounding it, said felt extending continuously from the backing into said annular portion and said annular portion being more highly compressed than said back-
  • a roller 8. series of disks forming a part of both the surface and the backing, said disks having depressions in their contacting faces extending from the midst of the face to one of the edges thereof, and means for compressing said disks in the di rection of the length of the roller and for retaining them under compression, whereby the surface. and the backing are retained under different degrees of com 'n'ession.
  • a roller comprising felt disks having projections surrolmding their centers on one. face and on the other corrcspoluling deprcssions of greater depth than the height. of the projections, each depression eoacting with the pmjection on the adjacent disk. and means for couuaressing the disks, whereby they are rendered more dense near the periphery than near the center.
  • a roller comprising a plurality of contacting disks of compressible material having axial holes and havii'ig a portion of the face surrounding said holes and extending outward therefrom cut away, and means for compressing the disks together and for retaining them under compression.
  • a roller comprising a support, a felt covering thereon having parts cut away at and continuously outward from its center and made up of a plurality of contacting circular pieces of felt compressed together, whereby the roller is rendered more dense at and near its periphery than anywhere else, and plates for retaining the covering in place.
  • a roller comprising contacting felt disks having depressions in one, face surrounding the center and extending outward therefrom, and means for compressing said disks together.
  • a roller comprising disks under compression constituting a surface and a backing therefor, the surface being of greater density than the'backing and the latter being of substantially uniform density.
  • a disk having a depression in one sidethereof and a correspondm projection on the other side thereof 0 less height'than the depth of the depression;
  • a roller comprising a support, a compressible covering thereon constituting a surface and a backing therefor and presenting continuous material from the support to the periphery, the'backing having contacting edges cut away to the support, plates near the ends of said support, and means for altering the position of the plates to compress the surface and the backing to different de 'rees.
  • a re er comprising a compressible covering, a support therefor, plates near the ends thereof and means for forcing the plates toward each other to compress the covering, said covering when under the highest compression desirable in use extending beyond the ends of the support to permit further compression.
  • a roller comprising felt disks, a sup port therefor comprising a tube, plates near the ends of said tube, bushings oo-acting,
  • a typewriter platen comprising a support, felt disks on said support having parts of their faces surrounding the center cut away at and continuously outward therefrom, said disks being compressed to form a .a supporting tube thereon, a coverin covering, a plate at each end'of the platen one of said plates being a ratchet plate and both serving to retain the disks in place.
  • a typewriter platen comprising a rodf
  • said covering being of the same material and substantially the same structure througlr out, and the striking surface being of greater density than the backing, and lates' on the supporting tube, one of said p ates being a ratchet plate, to retain the covering in place.

Landscapes

  • Handling Of Sheets (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Legs For Furniture In General (AREA)
US52060209A 1909-10-02 1909-10-02 Type-writer platen and other roller. Expired - Lifetime US998510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US998510TA 1909-10-02 1909-10-02

Publications (1)

Publication Number Publication Date
US998510A true US998510A (en) 1911-07-18

Family

ID=32508869

Family Applications (1)

Application Number Title Priority Date Filing Date
US52060209A Expired - Lifetime US998510A (en) 1909-10-02 1909-10-02 Type-writer platen and other roller.

Country Status (4)

Country Link
US (1) US998510A (enrdf_load_stackoverflow)
DE (1) DE254017C (enrdf_load_stackoverflow)
FR (1) FR421683A (enrdf_load_stackoverflow)
GB (1) GB191021929A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480127A (en) * 1966-06-16 1969-11-25 Olympia Werke Ag Printing platen for calculating and bookkeeping machines
US4411197A (en) * 1979-08-14 1983-10-25 Kabushiki Kaisha Sato Kenkyusho Printing device for hand labeler
US4938129A (en) * 1989-09-28 1990-07-03 Pitney Bowes Mailing machine including improved impression roller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034070C2 (de) * 1990-10-26 1994-03-31 Triumph Adler Ag Schreibwalze für Schreibmaschinen o. dgl.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480127A (en) * 1966-06-16 1969-11-25 Olympia Werke Ag Printing platen for calculating and bookkeeping machines
US4411197A (en) * 1979-08-14 1983-10-25 Kabushiki Kaisha Sato Kenkyusho Printing device for hand labeler
US4938129A (en) * 1989-09-28 1990-07-03 Pitney Bowes Mailing machine including improved impression roller

Also Published As

Publication number Publication date
GB191021929A (en) 1911-06-01
FR421683A (fr) 1911-02-28
DE254017C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US998510A (en) Type-writer platen and other roller.
US1953619A (en) Drum stick attachment
US1691336A (en) Roll
US2266275A (en) Platen for typewriters, adding machines, and the like
US3048197A (en) Shuttle with a bobbin clamping device
DE19804019B4 (de) Hammerkopf für ein Tasteninstrument und Herstellungsverfahren für denselben
US1379433A (en) Wooden-back printing-block
US1483452A (en) Molding
US998512A (en) Type-writer platen and other roller.
US1687952A (en) Method of making composite panels for metal furniture
US998511A (en) Caster.
US2186679A (en) Calender roll
US1531983A (en) Method of attaching plastic material to wood or the like and product thereof
US3091176A (en) Plastic printing plates
US1885364A (en) Insulating material and method of making the same
US1322963A (en) Edgar shantz
US1377510A (en) Matrix
US1531712A (en) Manufacture of hollow rubber articles
US1681447A (en) Matrix and method of making the same
US646547A (en) Process of preparing wood matrices.
US1908263A (en) Door of composite fibrous construction
US1814193A (en) Drop hammer
US483343A (en) Hand-stamp
US1607189A (en) Manufacture and treatment of printing plates
US904446A (en) Method of changing the grain of wood.