US159397A - Improvement in molds for casting bobbins - Google Patents
Improvement in molds for casting bobbins Download PDFInfo
- Publication number
- US159397A US159397A US159397DA US159397A US 159397 A US159397 A US 159397A US 159397D A US159397D A US 159397DA US 159397 A US159397 A US 159397A
- Authority
- US
- United States
- Prior art keywords
- mold
- casting
- bobbins
- molds
- improvement
- 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
Links
- 238000005266 casting Methods 0.000 title description 18
- 239000002184 metal Substances 0.000 description 8
- 210000001699 lower leg Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
- B28B7/0035—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
- B28B7/0044—Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding the sidewalls of the mould being only tilted away from the sidewalls of the moulded article, e.g. moulds with hingedly mounted sidewalls
Definitions
- This invention consists of a mold for casting bobbins constructed of four parts pivoted to a shank or foundation, and combining therewith a handle provided with a cam at one end and with a spring, in such a manner that when said handle is pushed in the cam is caused to advance and force apart the pivoted parts of the mold to deliver the bobbin, which is cast complete and ready for use, the action of the spring being to retract the handle in order to allow the parts of the mold to come together for casting another bobbin, as hereinafter described.
- Figure 1 is a sectional view of a mold for casting said bobbins, and it shows one of the bobbins in the position in the mold, and the sprue attached, as it would appear when the process of casting is completed and just before the mold is opened.
- Fig. 2 is a sectional view of the mold through the center and at a right angle to the view at Fig. 1, or transversely with the axis of the bobbin.
- Fig. 3 shows the bobbin complete after being cast and the sprue broken on.
- bobbins for sewingmachines have been formed of various materials, but the labor expended in the manufacture has always been an objectionable feature in the production of such articles; and to overcome this objection a mold, as at A, formed of any suitable material, as brass, is provided to operate similarly to the mold used in the process of casting types for printing.
- the mold is divided into four parts, each member of which is hinged or pivoted, as at B, to a shank, which serves as a foundation to hold the parts together or in working position, and also allows the several parts to be opened or separated from around the bobbin when cast.
- Said shank, as at C also serves to connect the mold with a handle, as at D, or with a machine, if one beused, as in the process of type-casting.
- the said four parts of the mold have formed upon their inner faces suitable are cast in a recess formed in a solid portion of the mold, and therefore they cannot have a rib or fin on them, as would be the case if the mold parted from end to end of the bobbin.
- the gate is shown at F, and is made so that when the metal enters the mold it is very thin, and is also on the portion of the bobbin that is covered by the thread; consequently, when it is broken 0E, any little degree of roughness left is not objectionable.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
UNITED" S'rn'rns MARTIAL DIMOOK, OF NEWARK, NEW JERSEY, AS SIGNOR TO THE CLARK THREAD COMPANY, OF SAME PLACE.
IMPROVEMENT IN MOLDS FOR CASTING BOBBINS.
Specification forming part of Letters Patent No. 159,397, dated February 2, 1875; application filed August 18, 1873.
To all whom it may concern:
Be it known that I, MARTIAL DIMocK, of the city of Newark, county of Essex and State of New Jersey, have invented certain Improvements in Mold for Casting Bobbins for Sewing-Machines, of which the following is a specification:
This invention consists of a mold for casting bobbins constructed of four parts pivoted to a shank or foundation, and combining therewith a handle provided with a cam at one end and with a spring, in such a manner that when said handle is pushed in the cam is caused to advance and force apart the pivoted parts of the mold to deliver the bobbin, which is cast complete and ready for use, the action of the spring being to retract the handle in order to allow the parts of the mold to come together for casting another bobbin, as hereinafter described.
Figure 1 is a sectional view of a mold for casting said bobbins, and it shows one of the bobbins in the position in the mold, and the sprue attached, as it would appear when the process of casting is completed and just before the mold is opened. Fig. 2 is a sectional view of the mold through the center and at a right angle to the view at Fig. 1, or transversely with the axis of the bobbin. Fig. 3 shows the bobbin complete after being cast and the sprue broken on.
It is well known that bobbins for sewingmachines have been formed of various materials, but the labor expended in the manufacture has always been an objectionable feature in the production of such articles; and to overcome this objection a mold, as at A, formed of any suitable material, as brass, is provided to operate similarly to the mold used in the process of casting types for printing.
In the illustration here given the mold is divided into four parts, each member of which is hinged or pivoted, as at B, to a shank, which serves as a foundation to hold the parts together or in working position, and also allows the several parts to be opened or separated from around the bobbin when cast. Said shank, as at C, also serves to connect the mold with a handle, as at D, or with a machine, if one beused, as in the process of type-casting. The said four parts of the mold have formed upon their inner faces suitable are cast in a recess formed in a solid portion of the mold, and therefore they cannot have a rib or fin on them, as would be the case if the mold parted from end to end of the bobbin.
The gate is shown at F, and is made so that when the metal enters the mold it is very thin, and is also on the portion of the bobbin that is covered by the thread; consequently, when it is broken 0E, any little degree of roughness left is not objectionable.
These several parts of the mold may be held together by a band of metal around them, or in any other convenient manner, in which condition the mold is ready for being filled with the melted metal.
It is proposed to use the ordinary typemetal, orQsomething having substantially the same properties, as melting at a low temperature, and therefore cooling'quickly, and at the same time being capable of receiving a smooth surface when cast, and also comparatively inexpensive 5 and said metal may be injected into the mold by any suitable apparatus for such purposes. After the mold is filled the band around the parts may be removed-that is, if one be used-and the several parts may be driven or forced open by striking upon the handle at D, which will forcea rod, R, (connecting the handle I) with the mold,) upward, and thereby drive or force the crosspiece, as
at M, on the end of the rod up against the inshank G,or lower end, than those on the edges consequently the sides will be driven 05 from the bobbin first, or while the ends or tips are still at rest in their respective sockets, and then, after the sides are separated, the crosspiece M acts upon the edges to free the ends finishing would make them too expensive for the short time they are intended to be used, say until fifty or seventy-five yards of thread are used in sewing; and it is also well known that said bobbins had 110 tips or centers to hold them in the shuttle of a sewing-machine.
I therefore claim- In combination with a mold, as described, a handle, D, cam M, spring R, and spring N, as and for the purposes set forth.
MARTIAL DIMOGK. Witnesses:
CHAS. H. LEONARD, PHILIP OREILLY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US159397A true US159397A (en) | 1875-02-02 |
Family
ID=2228807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US159397D Expired - Lifetime US159397A (en) | Improvement in molds for casting bobbins |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US159397A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3309741A (en) * | 1963-12-16 | 1967-03-21 | Point James Philip La | Die casting apparatus with bent spring mold maintaining means |
-
0
- US US159397D patent/US159397A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3309741A (en) * | 1963-12-16 | 1967-03-21 | Point James Philip La | Die casting apparatus with bent spring mold maintaining means |
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