US1533010A

US1533010A - Pattern

Info

Publication number: US1533010A
Application number: US605368A
Authority: US
Inventors: Henry M Kinslow
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-12-07
Filing date: 1922-12-07
Publication date: 1925-04-07
Anticipated expiration: 1942-04-07

Description

April 7, 1925. Y

H. M. KINSLOW PATTERN Filed D96. 7, 19 22 Dry Wren/0r I Patented Apr. 7, 1925 issaeio 1 HENRY M. KINSLO'W, O1 SANTA. ANA, CALIFORNIA PATTERN.

Application filed. December 7, 1922. Serial No. 605,368.

To all whom it may concern:

Be it known that I, HENRY M. KrNsLow, a citizen of the United States. a resident of the city of Santa Ana, in the county of Orange and State of California, have invented new and useful Improvements in Patterns, of which the following is a full, clear, and accurate description.

This invention has to do with. a pattern and is particularly applicable to that class of pattern known as a. gated pattern, and it is an object of the invention to provide a pattern construction which is siu'iple and effective, and which permits of the size and proportions of the pattern proper being readily varied with very little inconvenience and at very little expense.

Gated patterns, such as are employed in the manufacture of. various articles and machine parts, usually comprises a plate carrying a plurality of patterns proper and having ribs whi h form the channels to carry the metal into the molds formed by the patterns proper. Gated patterns of this general type are usually formed of metal, it being most common to cast them as a unit from a wooden pattern. It is, of course, necessary that a metal pattern, cast fron'i a wooden pattern, be finished or surfaced. which operation must usually be'done by hand as very few patterns are of such form or configuration as to permit of their being finished by machine. Further. it'is in practice extremely difficult to obtain a perfect metal pattern in the usual manner as it is practically impossible to cast a. flat comparatively thin plate, such as is employed in a gated pattern, so that it is of uniform thickness throughout. Even though the original wooden pattern is carefully made and designed to overcome this ditliculty it is found that the metal draws to the BCLQBS of the plate as it cools leaving the middle portion thin. Further, metal gated patterns When once formed and finished are not useful in the manufacture or production of articles other than the specific ones which will be formed by the patterns proper, which are integral with them. In other words, with an ordinarymetal gated pattern it is impossible, or, at least impractical, to increase or decrease the size of the article being produced, or the proportions of the artit- 1?.

In practice, when it is desired to change the size or proportions of the article, the gated pattern is completely rebuilt or a complete new pattern is made. The rebuilding of a pattern may make it applicable to casting the new article, but usual ly ruins it for casting any other article and puts it in condition where it cannot be effectively rebuilt. The construction of a new pattern to cast the new article, of course, necessitates as gated metal patterns are comparatively expensive. Certain devices and machine partsfor examplepoppet valves of the type used in internal combustion engines, are made in awide variety of-sizes and propertions and, therefore, for their economical manufacture, ordinarily require one or more patterns for each size and differently proportioned device. In the case of poppet valves, such as are used. in internal combustion engines of the automobile. type, there is at present an extremely large demand for cast iron head valves in an almost considerable labor and expense,

infinite number of sizes and varities of proportions. With the ordinary type of gated pattern and with ordinary methods, a person encaged in the manufacture of cast head valves to supply this demand must supply himself with a great number of gated patterns in order to be able to'economically produce these devices. 7

The present invention is concerned generally with a construction and formation of gated pattern, and in its practical application is particularly applicable to a gated pattern for the formation of poppet valve heads, and the like. In the present disclosure I will refer to :1. pattern embodying the present invention. which is designed particularly for forming poppet valve heads on stems, but I do not thereby mean to specifically limit the scope of my invention to such a specific application. It is to be understood,

therefore, that when I make specific reference to a poppet valve that I am making such reference mainly for the purpose of illustration and intend that the invention be used or carried out in accordance with the principles I herein set forth in the manufacture of numerous other articles or parts, such as will readily suggest themselves.

It is. an object of this invention to provide a pattern proper including parts which are rep e a capable of heirs int r;

'a single pattern of 'ly inexpensive manner;

related in various manners for the purpose The various objects and features of my invention will be best and more fully undering the present invention;

stood from'the following detailed description of atypical application of the-invention, throughout which reference is had to the accompanying drawings, in which V ""Fig. 1 is an elevation'ot the drag side of a. gated pattern of the more or less ordinary type embodying the present invention;-

Fig. 2 is an" ele-vation of the other, or cope side otthe pattern shown inFig. 1 ;V

Fig. 3 is an enlarged, detailed sectional viewpofone unit of the pattern, loeinga view taken as indicated by line 33 on Fig.1.

is 'a detailed sectional view taken as indicated by line Hon Fig. 3 c

{Fig 5 is a view similar to Fig. 3, showing another form of construction embodyand I v Figs. 6 and 7 are views illustrating the manner in which the pattern is used in forming the impressions in the mold.

' The pattern embodyin the present invention includes, generally, a plate,.designated in, the drawings by numeral 10, ribs 11 on the plate 10 tojtorm metal, carrying channels in the mold, and patterns proper; 12."

or", the drawings .I have In Figs. 1 and 2 illustrated a more, orless typical form of gated patterns which includes a plurality of patterns 12' which are in combination with a series of ribs which will form chan:

nels" in a mold-so that the metal poured, into the mold through the feed gauge will flow into and through the mold and into suitable risers, As far as the present invention is concerned it is immaterial as to how many patterns 12 are mounted on the plate 10, and asto the number and arrangementof the ribs 11 It is desirable. however, in the case of casting valve heads on to ste1r 1 s as I hereinafter describeth at the I ribs, 11 be arranged and proportioned so that the metalwill flow from the fee d 'gate through or across the molds; and into the risers as the flow of metal through the nolds will cause thc"valve heads being-molded to fuse onto the'stems, It'is also to be understood that the several patterns 12 in a; single gated pattern need not-,- asfar as the present -in,

way rebuilding or plate and beyond the; flange part '22;

vention is concerned, he the same, but may vary in slze and proportions in the manner made possible by the present-invention. For I the purpose otlt'aicilitating a clear and con cise understanding of my invention I will a cast plate machined on both sides so that it is smooth-and of perfectly uniform thickness throughout, It willbe understood, 0t

course, that the exact size and shape of the plate 10 will, in any given case,

dependupon the size, number and arrangement of patterns 12 and ribs 11; I V

The ribs 11, although theymay bec cast or otherwise formed integrally with the 10,- areioreferably formed separately 1 are attached to the drag s de of the plate 1Q, as by suit-able "screws 13 the heads 14 ot'the 7 preferably counter-sunk so that-"they do not project from the ribs 11. In a device-where it is desired to have two channels communicating with each mold, one for the purpose of carrying metal to the mold for the purpose of carrying the metal away from the mold, there are two ribs 11 mounted on-the plate 10 so that they ex tend'to or from the pattern 12.

In the form of the invention illustrated in Figs. 3 and 1, the pattern 12 ismounted on the drag side of the plate 10 and the plate. is tormed at the'point' of mounting the pattern. 12- with lVith this form jot construction itispreterred that the ribsll extend to o-r at} least ubstantially to, the sockets 16, as I; have inner end portion: 23 of the hub part is adapted toextend into't he socket 16 in'the plat-e"10,while the outer portion 211 of the rib pa rt projects outwardly from the'plate The. flange par't22 flat' annular member formed with diametrically"disposed recesses 25 on its inner side to receive the ribs 11 and formed with an annular recess26 in itsouter side to'receive a fian'ge 2f7, which extends from the hub part 29. The innerside of the flange 27 is shaped to accurately seat in-th'e recess 26 while there is a fillet 28 in the corner between theflange 2! and the outer and the other a :recess- 7 or socket 1-6.

In' the particular form of construction "illus I ferred form of my invention, is preferably VI screws lfjare, of course,

portion of the hub 7 part. 20, Thefiang-e part 22 is formed with a central opening 29 through which the inner portion 23 of the rib part passes. The recesses 25 in the inner side of the flange part are shaped and proportioned that they accurately and more or less closely receive the ribs 11. The outer port-ion 24 ot the hub part 20 is provided with a central opening 30 adapted to receive the end portion of a valve stem 31. In the particular form of construction now under consideration the inner portion of the huhpart ,20'is provided with a screw threaded opening 32 which in effect forms a continuation of the opening Sh. The opening is screw threaded and carries a plug 33 which can be adjusted as to position in the opening 32 to vary the amount that the valve stem can be extended into the hub part. 1

In accordance with the preferred form of the invention the pattern 12 is detachably mounted on the plate 10 by means oi? a screw 40 which extends into the socket 16 through an opening 41 in the plate 10 from the cope side of the plate and screw threads into an opening 43 provided in the plug 33. When it'is desired that the head cast on the stem be crowned a suitable crown washer or filler 4.4 is arranged at the cope side of the plate and is held in place by the screw 40, as clearly illustrated in Fig. It is'desirable, of course, that t e filler 4A and that the plate 10 be counter-sunk so that the head of the screw 40 will not project from the tiller or plate when the device is being used with or without the filler 4.4.

To form a mold to cast a head on a valve stem the pattern 12 is assembled, as I have illustrated in Fig. 3, a hub part 20 being employed which has an opening 30 which will properly receive the end of the valve stem and a flange part being used which is of the desired thickness and diameter. A filler 44 of the desired size and configuration is mounted on the cope side of the plate 10, if it is desired that the head be crowned. The plate 10 is arranged with the drag side up and the drag portion of the flask is arranged on it in the usual manner. The sand is then filled into the drag onto the drag side of the plate and around the pattern and the valve stem in the usual manner and as illustrated in Fig. 6. The drag and plate are then reversed and the cope portion of the flask arranged in place at the cope side of the plate 10, pins or posts are then arranged in position to form the feed gate and the risers and then the sand is filled into the cope and onto the cope side of the plate 10 .in the usual manner. Upon removal of the pins, separation of the cope from the plate 10, removal of the plate from the drag, placement of the cope on the drag, the mold is formed with the valve stem embedded in the drag and extending into the mold so that the head will be cast on the end of the stem. This particular manner of handling the pattern in connection with an ordinary cope anddrag flask is, of course, simply a typical manner in which-the pattern may be handled and is by no means the only one.

From the foregoing description it will be obvious howa gated pattern constructed in accordance with the present'invention may be readily set or made applicable to forming heads of various sizes and proportions on valve stems of various sizes by employing hub parts 20 of different sizes and configurations and flange parts 22 of different sizes and configurations. I have found in prac- (ice that by providing a set of hub parts 20 of different sizes and configurations and a set of flange parts 22 of different sizes and configurations, that I can interchange and combine them to obtain a great variety of different sizes and proportions of valve heads. lVhen I employ thetorm of con-v struction which I have above described I form all of the hub parts 20 so that they can be properly mounted on .the plate 10, and I form all of the flange parts 22 so that they will properlycooperate with any of thehubparts andwill properly cooperate with or overlap the ribs 11. Further, from the foref going description it will be obvious how the pattern 12 can be very easily,removed from the plate, changed, and then rearranged as it is merely necessary to manipulate the screw 4-.() for the purpose of detaching and mounting the pattern. pattern 12 are of simple inexpensive con struction and can be readily finished in a lathe or automatic machine so that they will make smooth models. i

In the form of the invention which I have illustrated in Fig. 5, the pattern proper -12 is formed in a single piece, that is, the hub part and the flange part are integral and its inner side is flat so that it seats closely on the surface of the plate 10. As I have illustrated in Fig. 5 the ribs 11 extend to the point of mounting of the pattern 12 and the inner side of the pattern is provided with a diametrically disposed recess 25*, which receives the ribs so that the pattern overlaps them'in substantially the manner of the pati tern hereinabove described. The pattern 12 illustrated in Fig. 5, is mounted on the plate 10 in a manner similar to the pattern illustrated in Fig. 3 by means of a screw 40 which extends through the plate 10 from the cope side and screw threads into an opening 43 pr0vided in the pattern 12. This form of construction is obviously somewhat more simple than the form illustrated in Fig. 3, but requires new pattern 12 for every variation in size or proportioning of head.

The parts of the- Having described only a typical preferred form of my invention I do not wish to limit myself to the specific details hereinabove set forth but wish to reserve to myself any 7 changes 7 including, a plate, a mic on one side out the plate, and a pattern part detachably mount- 7 fed on said side of the plate so that it over I eluding,

laps a part of the rib. 2. Apattern of the character described ina plate, two ribs arranged on one side of the plate so that they are substantially end to end, and a pattern part detachably mounted on said side of the plate so that it overlaps the adjacent ends of the ribs. 3. A pattern of the character described. including, a plate, a rib on one side of the plate, a pattern part having a recess in its inner side adapted-to receive the rib, and means for detachably mounting the pattern part on said sideo'f the plate so that the enclof the rib extends into the recess.

4f. A pattern of the characterdescribed including, a plate, a rib on one side of the plate, a pattern part including a hub part and a flange part releasably carried by the hub part, and means for detachably mounting the hub part on the plate so that the .flange part overlaps the rib. V

A' pattern of the character described including, a plate, a rib on one side of'the plate, a pattern part detachably mounted on the plate to overlap the rib, the pattern part having a socket to receive a part to be left in-the mold, and means for adjusting the size of the socket.

6, A pattern of the character described 7 for casting a valve head on a stein includ ing, a plate, a rib on one side of the. plate,

- and a head pattern adapted to .beremovably ceive the end of the rib so that the pattern overlaps the rib.

7; A pattern of the character described for v casting a valve head on a stem including, a

plate having a socket in one side, ribs-on said side of the plate extending to opposite sides of the socket, and the plate having an open ing through it at the socket, a head pattern including two detachable parts one a' hub part having an inner portion adaptedto extend into the socket in the plate the other a flange part having recesses adapted to receive the ribs, the hub part having an opening through it to receive outer end portion of; said hub part, a plug screw threaded into theinner portion of said opening, said plugihaving a screwv threaded opening in it, a crowned Washer adapted to be arranged on the other side of the plate opposite the pattern, and a screw arranged through the Washer, the opening in the plate, and screw threaded into the opening inthe plug to releasably mount thepa ern Washer on the plate.

In Witness that I claim the foregoing I have hereuntorsubscribed my namethis 17th day of November 1922.

HENRY M.'KINSLOW.

Witnesses: 7

D. N. KE LY, SOPHIE PRIEss.

the stem at the