US1665819A

US1665819A - Engraving block

Info

Publication number: US1665819A
Application number: US747006A
Authority: US
Inventors: Plummer Horace
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-31
Filing date: 1924-10-31
Publication date: 1928-04-10
Anticipated expiration: 1945-04-10

Description

April 10, 1928. 1,665,819

H. FLUMMx-:Ry

ENGRAVING BLOCK Filed Oct. 3l. 1924 2 Sheets-Sheet 2 I" .10. 77119.11. Fg'gzy INVENTOR:

ATTORNEY.

Patented Apr. l0, 1928.

@MCE Hausse QF LAWREME rviser?, Meer@ COUNTY, INDIANA- ENGRAVINQ isnocx.

Application filed October 31, 1924. Serial No. 747,096.

This invention relates to improved holding ymeans whereby' articles may be held or vcarried in various positions to be worked upon by engravers orothers, the invention having reference more particularly 'to' ran apparatus 'adapted' for holding jewelry or other articles either stationarily or movably and under control ofan engraver or other artisan.

An objectof the invention is to provide a generally improved engraving block which shall be of such construction as to be adapted Ato hold articles conveniently' and securely to be engraved or lotherwise workel upon7 especially 'various Aarticlesl of different sizes and shapes, and without requiring a cu'mhersome lot of detachable devices Lrequiring tiresome care-taking.

Another object is to provide an engraving block of the above-mentioned character which shall be of such construction as`tosecui-ely hold"articlesy either sta'tionfarily or movably and permit of either -.free rotary movement or slow" retarded movement, and which shall be readily adjustable to the needs ofthe er'igrn'fer.'y

V further'objectis to provide an adjustable engraving block which shallhave' a removable table to securely carry anV article and shall bev adapted to be secured'ifn a small lathe chuck to permit thearticlelto'he ,vor'kedupon in alathe'. i

'.X still"furtherlobject is to provide improvements in Vvarious parts and valso provide new :ulvan'tageous paijts orfeatures' in engraving blocks. to the end that "important A*advantages l shall 'be obtained' by "thel engraver. jeweler o r other'artisansworking on small articles required to Ybeheld lwith precision. i vlilith the above-mentioned and other objects iu view, the invention consists in :an en; ving block having various novell fealurcs r`and improved y*parts affording improved facilities whereby a large variety of articles may be securely held to be worked upon. particularly relating to reversibility and adjustability of various parts; and,`t-he invention consistsv also further in various lnovel parts and in the combinations andarrangementsof parts as hereinafter particularly described and further defined'in the claimsA appendedhereto. AReferring to the drawings,-Figure,1 is a top plan showingthe major portion of the improved engraving block, `partially broken away to disclose improved internal features thereof; Fig. 2 is'an enlarged fragmentary sectional elevation approximately on the planeet the' line'II-Il. in Fig. 1; Fig. 3 is an clevation'of ythe engraving block, minus a number of the lremovable parts thereof; Fig. 4 is a sectional' elevation of the engraving block, as' on the line lI-IL .in which di'tlfer'ent' applications of removable parts are`seen; Fig. 5 is a side View of one ofthe 'adjustable and periuissibly removable parts ot the apparatus; Fig. 6 isa sectional elelvation approximately on the line VI--VI in Figp'l, in which a nuu'iber of removable parts areA omitted; Fig. 7 is a. side view of one/of the removable parts ofthe apparatus, fon an enlarged scale; Fig. 8 is a fragmen- `ltary` elevation partially in section on' the l'inc Vlll-Vlll on 1; Fig. 9 is a top plan of one of the improved vise jaw heads on an enlarged scale;Fig. 10 is a horizontal sectionof'the jaw head, as on the line X-X in Fig. 1 5 Fig. 11 is an elevation` of one lof the r'imprt'ived holding studs or pins com- .prised in the invention, being on an enlarged scale; Fig. 12 is a sectional elevation ofthe improved stud; Fig. 13 isv an' end view' of a half-nut type of a controlling head 'embraced inl the apparatus; 14 is afside elevation of Fig. 9; Fig. 1 5 is a section on the Ylinie XV-XV on'Fig. 9; Fig. 16 is a section on the line"XVl-XVI on Fig'. 9; and Fig.'r17`is a fragmentary elevation vin which parts shown in Fig. 3 are inverted t0 veffect adjustability.

' In the'variou's figures of the drawings similar reference characters indicate corresl'iondin'gl elements or features of constructio'nV referred to hereinafter in detail.

A; preferable embodiment of the invention comprises a'foundation part which is adapted to be supported upon a work bench Yor'taliilewhether or 'not the surface thereof is ai trueplan'e, and preferably the foundajtion 4is composed mainly of'thick leather 'comprising a' vertical annular wall 1 having av metallicl stiflening liner 2 therein, the top of fthe' wall having an vinwardly extending annular ledge 3 integral thcrewi th. 'The' botl"tom of the wall being'slightly yielding to unevenness of bench surface permits the wall t'rest irmlyin place. A heavy metallic lbaseV 4 is provided which has a spherical bottom portion 5 and a flat top 6, 'the bottom portion being adaptedto adjustably rest on the ledge 3 and permit noiseless tilting movement of the base on its foundation, the base being hennspherical and having an axial bore 7 therein and also a screw threaded hole 8 extending from the curved bottom portion to the bore, a set-screw 9 being arranged in the hole to securely fastena bearing case l() which closely'. but removably fitted into the bore. The case 10 has a cen tral bore 11 and a screw-threaded hole 12 extending Vthrough the wall of the case to the bore in which a set-screw 13 is fitted, a plurality of the set-screws being preferred. The case has also a ball cup or race 14 at one end of the central bore and a ball cup or race l5 in the opposite end of the bore. Adjacent to the periphery of the base a socket 16 is accurately drilled from the flat face G to receive a loch screw or pin. The case 10 can be adjusted longitudinally in its bore or may be `arranged in relatively inverted position1 permitting the base to bo inverted and to restvery solidly on its flat face G.

An improved heavy metallic table or bed plate 17 is provided which has flat lower and upper faces, and the tableA is provided with an axle that has a head portion 18 rigidly secured centrally to the lower portion of the table, the axle having a body portion 19 eX- tending lthrough the bore ll and provided with a conical bearing portion 2O that is supported upon bearing balls 21 arranged in the cup 14. A conical collar 22 is screwed onto the end of the axle, so as to be adjustable thereon, and is guided by bearing balls 23 arranged in the cup or race 15. A locking screw 24 is screwed into the collar to loclr it to thc axle and preferably has a. centering Joint 25 ada )ted to be seated in.

the center cavity left in the end of the axle after having been turned in a lathe, so that the locking screw actsy as a brace to steady the bearing cone 22 in its position on they axle. Ordinarily the axle is not engaged by the set-screw '13 but is free to rotate in the bearing case. The table has a vertical guide hole 26 adjacent to the edge thereof that may be brought into alignment with the soclret'ltl, and the upper portion of the hole has screw threads 27 therein. A locking pin 28 is fitted into the hole 26 and has screw threads 29 on its upper portion that are fitted to the threads 27, the portion of the pin 28 at the lower end of the threads thereon being stopped against the threads in the hole to prevent the pin from being moved upward obstructively beyond the top face of the table. The lower end of the pin 28 has a pointed portion 3() adapted to guide the pin into the socket 16, and the upper end of the pin has a screw driver slot 31 therein whereby the pin screw may be turned in the pin hole.

The upper portion of the table has a guideway 32 that is coextensive with the diameter of the table and has a groove constituting a shaft bearing 33 centrally in the bot-*tom thereof, the bearing being half-round and coextensive with the remainder ofthe guideway. The guideway is formed partially by

parallel guide bars

84 and 35 composed'of upper portions of the table with a slot space between them. An improved operating and controlling shaft 36 is provided that is approximately as'long as the guideway and it has two

collars

37 and 38 thereon spaced apart on opposite ends of the middle portion of theshaft. The shaft has reversely pitched

screw threads

39 and 40 that are directly supported in the shaft bearing groove to rotatably guide the shaft. For precisely maintaining the operating shaft in position for correct operation the table has two aligning

bores

41 and 42 therein eX- tending from the periphery of the table to the guideway at right angles to the latter, and two

cylindrical plugs

43 and 44 are inserted in the bores reslrbectively, the inner ends of the

plugs having forks

45 and 46 respectively that are closely fitted between the collars 37' and 38 on opposite ends of the shaft, the forks together closely embracing the shaft. rlhe outer ends of the plugs are flush with the periphery of the table and have screw driver slots 47 and, 48 thereinv respectively, whereby to correctly bring the forks to proper position when inserting the plugs which are very closely fitted into thev bores and are secured in place by means of' set-

screws

49 and 50 arranged in the underv side of the table and engaging the plugs respectively. The plugs may be adjusted by slightly moving them inwards to compensate for wear in connection with the shaft. The shaft 36 Vis provided with an improved removable cranlr for rapid operation, and to this end the shaft 3G Ahas a. bore 51 extending from each end thereof and. a screw driver slot 52 in the end of the shaft. The cranlr has a stem 53 removably arranged in the bore 51, one end of the stem having a head 54 thereon that hasjlugs 55 to be entered in thel screw driver slot for rotating the shaft 3G. The head has a crank arm 56 rigidly secured thereto. The opposite end of the stem 58 is adapted to be used as a screw driver to manipulate the various screws comprised in the apparatus.

Two improved controlling

heads

57 and 58 are provided which are of the half-nut type adapted to slide in the guideway 32. and each has saddle-like contact with the upper portion of the shaft 36, the under portion of the head having screw thread portions 59 therein correspondingl to and engaging the

screw threads

39 and 40 respectively. The heads have central portions extending upward between the

guide bars

34 and 35 and the tops of the heads have vertical cylindrical posts 60 and G1 rigidly connected thereto, respectively. Two

liners

62 and 63 arearrangedbetween the controlling heads,

and, the guide bars 3l and 35 respectively ,and are provided with adjusting screws 64 iand Garespectively that are appropriately -l compensate for wear.

,ends, the main portion ot the plate being .F or the purpose of excluding lilings and rother matter troni the shaft 36 and other operating parts, a vbridge plate 66 is secured at opposite ends thereoiI to the top ot the table l'above the plugs 43 and la and extends over the giiideway interniediately of its slightly higher than the top ot the table, and two

cover plates

67 and 68 to cooperate withy the bridge plate are arranged to slide ,upon the top ot the table and cover the remaining portions of the guideway and portions ot' the controlling heads that operate between the

guide bars

34 and 35, the plates lhaving apertures receiving the posts (it) and 6ll respectively whereby the plates are moved, and permitting` ready removal ot' the plates to oil parts beneath, the inner ends ot the plates extending under the hridgeplaie GG` to continuously cover the gui dew ay.

Two improved metallic jaw bodies G9 and 70 are provided which are preferably cylin-` drical, and each body has a socket bore 7l in its lower portion, the bodies being interchangeable on the posts G0 and 6l, the posts being received into the socket bores respectively aiid rotatably supporting the bodies with the top of the posts in contact with the bottoni ot' the socket bore. Each jaw body has a set-screw 72 in one side thereof that may be tor-ced into engagement with the adjacent post to prevent rotation of the jaw body when set as may be desired on the post. The upper portion of each jaw body has an upwardly facing shoulder 73 which preferably is formed by cutting away a portion of the side ot' the body to constitute a recess, the shoulder and the back 74 of the recess preferably being inclined, and the back of the recess above the shoulder has a siinilaily inclined tongue 75 thereon, the side edges of the tongue being under cut to constitute paiallel dove tail connection portions.

A pair of improved similar jaw heads are provided that are adapted to be invertibly connected to the jaw bodies, the heads coinprising body members 7G and 7 6. each having on one side a pair of guide ribs 77 and 7S adapted to slidingly engage the sides of the tongue on the jaw body. the ribs extending trom the body at an inclination towards one another and holding the body of the head in place as it rests upon the shoulder 73. Each jaw head body has a novel head port-ion 79 thereon in which are a suitable vnumber of socket bores 8O to receive holding studs orI pins as may be required, and the ythe bore.

opposite ends n.of the head portionhave v`slightly projecting lips 8() and 80 respecofthe head portion, whereby articles may be gripped when the pair of jaws are `forced kapart,,said upper portions being'curved to constitute segments ot circles. Each vhead portionhas` also a suitable number of relatively smaller socket `bores 82 that extend entirely through the head portion, andthe middle ol thc l'ront ot the head portion preferably has a groove 83 thereiirto receivev portions ot articles when clamped between the jaws. Stud pinsSl, 84', are provided which are arranged in the bores 82 and have each ay slot 85 in its lower portion, permitting diametrical expansion ot thepiii so as to frictionally hold the pin tightly in Vylllie normal upperend olE each pin has a small lip 86 thereon produced by cutting a, groove in the pin adjacentV to its top. lllhen not in use the pins are pushed down so as to not project 'l'roin the top of the head portion, but may be readilyY pushed up a suitable, distance when required tor use.

lelie jaw heads are provided also with removable and interchangeable holding' studs or pins, some being characteristically ditiierj ent from others to atord a wide range of tacilitie s, and one 'form of construction theieotl .oniprises a stud body 87 having a novel `head that extends over beyond one side of the body at an inclination and has aprojccting ac nte angled lip 88, theopposite side ot the head having an inclined lace 89 and an acute angled projection 9() at the bottom ot the tace, the extreme top oi the head havlingan acute angled lip 9ltorined by undercutting so as to leave a small supporting shoulder below the lip. The stud body has screw .threads 92 thereon extending from the bottom endv thereot'. A sleeve 93 is arranged to slide over the body and has a tlai'ed upper portion to receive the head of the stud, the top ot the flared portion being inclined to .correspond approximately to the inclination ot thel tace 89, constituting an adjustable rest member on which articles vmay be supported whilebeing gripped by the lips or projections on the head. The

ybody 94lhas a longitudinal groove 95 to receive a spline, a nut 96 is arranged on the body against the sleeve 98 to operate in connection with the screw threads, and a spline 97 is arranged in the groove and extends through the nut, the spline having a lug 98 thereon that is anchored in the sleeve 93 and also a lug 99 engaging the lower side of the nut, so that the sleeve shall be moved with the nut. The stud has a base sleeve 10() screwed onto it and suitably secured against rotation, preferably by means of a lock pin 101, the base sleeve having a true smooth extei'ior adapted to be removably inserted into "may require.

either one of the sockets 80 to be firmly supported therein. Another 'form of holding stud or pin which in some cases is advantageously used in association with that above described, comprises a cylindrical body 102 adapted to be. removably supported in one of the sockets 80. one side' of the body having a concavity 103 adjacent to one end of they body whereby an acute angled lip `104 is provided, the opposite side of the body having a relatively shorter sharp lip 105 at the end of the stud and also another lip 106 adjacent thereto. Slightly farther away from the. end of the stud one side thereof has a recess llli'to receive a poi'- tion of an article that may be gripped by the projections or lips 105 and 10G or either one of them. The body has also a relatively larger concavity 108 adjacent to the opposite end thereof, an acute angled lip 109 slightly back from the end of the stud, another gripping lip110 at-the extremity of the stud to grip an article that may be supported above the projection 109, the opposite side of the stud having another lip 111 formed by under-cutting so that the. lip does not project beyond the side of the stud but may be entered into a socket S0.

' Each

jaw head body

76 and 70 has two wings 112 and 11.3 adjacent to the head portion 79, being on the side of the body opposite to lthat on which the ribs 77 and T8 are located, the wings converging each towards the other and between which a face block 114 is dove-tailed and held with its butt end against the head portion 79, the jaw head being inverted to make use of the face block, the latter being composed of wood or other suitable non-metallic substance not likely to mar articles that may be held between theV two blocks.

-ln practical use the apparatus will be op* erated or manipulated somewhat similarly to well known engraving blocks, but more effectively and with great precision, and the artisan will readily make such changes in adjustments and change holding devices in the jaw heads as will be found. to be most advantageous. In sonic cases the articles to be worked on are clamped between the gripping holding devices, in other cases the jaws are 'forced apart to securely hold articles. Face blocks 114 may be provided in variety and may be readily reshaped as varying needs Y Then tilting the base 4 on its foundation the movement is smooth and noiseless and the base is not liable to be moved accidentally. In some cases the bear'- ing case 10 is withdrawn with the table from the base, the set-screws are forced against the shaft body 19 to lock the case thereto, after which the case 10 may be secured in a lathe chuck to permit turning the articles that may be held by the jaws mounted on the table. At times it may be desired that the table rotate freely on the base; 'at times it may be desired that the table'be frictionally retarded to prevent too free movement, the table having slight frictional contact with the top of the base, as seen in Fig. 6, or the table may bear heavily upon the base so as to prevent accidental rotation of the table. when closely adjusting the table to the base by adjusting the case 10 in the base the table may be precisely raised orlowered by ma nipulation of the screw pin 20 on the top of the base with the screw 9 withdrawn, and when the proper adjustment has been made the screw 9 is to be forced against the case l0 to lock it in place. The screw pin should afterward be released from the base. The various 'features of construction and parts of the apparatus will suggest to the artisan many other usesthereof that will be found to be highly advantageous and economical.

What is claimed as new is:

1. An engraving block having jaw bodies and jaw heads removably connected to the upper portions of the jaw bodies respectively,A the jaw heads being inve'rtible on the jaw bodies and provided with holding devices adjacent to the tops and bottoms thereof, the bottom devices being different from the top devices.

2.4 An engraving block including a table, two cylindrical vise jaw bodies adjustably mounted vertically upon the table, and two jaw heads removably connected in inclined positions to the upper side portions of the jaw bodies respectively, each jaw head being invertible on the jaw body and having a plurality of holder sockets in the normally upper portion thereof.

3. An engraving block having vertical jaw bodies provided each with an inclined stop shoulder and an inclined dove-tail guide tongue above the shoulder, and jaw heads having-'each a pair of dove-tail guide ribs on its back to co-operate with the tongue, the head being invertibly supported upon the shoulder.

4. An engraving block including vise jaws with sockets therein, and grip devices comprising bodies having bases removably seated in the sockets respectively, each of the bodies being` screw-threaded and having a nut to operate thereon, each device including a head inclined on the top of the body, and a supporting sleeve on the body connected to the nut and having a iiared upper portion to embrace the under portion of the head.

5. An engraving block including a table, controlled heads adjustably supported in the table and having posts respectively, a pair of jaw bodies rotatively adjustable on the tops of the posts respectively and two jaw heads removably connected at an inclination to the jaw bodies respectively and invertible thereon, each aw head having a plurality of holding studs removably connected to one end thereof and also a non-metallic face block removably connected to the opposite end thereof.

t. An engraving block including a table, two controlled cylindrical posts adjustably supported by the table, two cylindrical jaw bodies having sockets in the lower portions thereof receiving the posts respectively, the bottoms of the sockets having supporting contact with the tops of the posts and rotatably supporting the bodies, each jaw body having a holding tongue on the upper portion of one side thereof, and jaw heads reversibly connected to the tongues on the bodies respectively, each jaw head having holder sockets in one end thereof and means adjacentto the opposite end thereof to secure a yielding face block thereto.

7. An engraving block including a table having a guideway therein, a portion of the guideway being open in the top of the table, a screw-threaded operating shaft rotatably supported directly on the bottom of the guideway, a pair of controlling heads arranged in the guideway and connected with the operating shaft, each head having a post thereon, a bridge plate secured to the top of the table and extending over the guideway intermediately of its ends, two cover plates connected to the posts respectively and extending across t-he remaining portions of the guideway and also under the bridge plate upon the table, and vice jaws mounted on the posts respectively.

8. In an engraving block, the combination of a jaw body having a shoulder and a guide tongue on one side thereof, and a jaw head removably supported upon the shoulder and having guide ribs on its back co-operating with the tongue to hold the head on -the shoulder, said head having stud-sockets 1n one end and wings to hold a face block adjacent to the opposite end thereof, the head being invertible on said shoulder.

9. In an engraving block, the combination of a base, a table rotatably mounted on the base and having a guideway therein extending to the top of the table, an operating shaft guided in the gu'ideway and having reversely pitched screw threads, two controlling heads movable in the guideway and connected with the screw threads respectively, each head having a post thereon, two cover platos connected to and movable by the posts respectively and covering each a portion of the guidewa-y, and vice jaws mounted on the posts above the cover plates respecti vely.

l0. In an engraving block, the combination of a table having a guideway therein and two smooth bores at right angles to the guidewa-y and extending to opposite sides of the guideway, an operating shaft rotatably supported in the guideway and having two collars spaced apart and also reversely pitched screw threads extending away from the collars respectively, two plugs in said bores respectively and secured therein, the inner ends of the plugshaving forks respectively that eX- tend between the collars in guiding contact therewith, a pair of controlling heads arranged in said guideway and connected with said screw threads respectively, and vice jaws connected with the controlling heads respectively.

11. In an engraving block, the combination, with a table and vise jaws on the table having sockets in the top thereof, of a plurality of studs comprising each a base sleeve to be supported in a socket, a stud body secured in the base member and having screw threads thereon, said body being provided with a head that extends over beyond one side of the body at an inclination, the upper end of the inclined portion having an acute angled lateral lip thereon, the head having an inclined top face and gripping lips at the top and the bottom of the inclined top face, and a supporting sleeve adjustable on the stud body and having a flared upper portion to receive said head, the sleeve being provided with an adjusting nut connected with said screw threads.

In testimony whereof, I aix my signature on the 27th day of October, 1924.

HORACE PLUMMER.