US1314142A - Harry c - Google Patents
Harry c Download PDFInfo
- Publication number
- US1314142A US1314142A US1314142DA US1314142A US 1314142 A US1314142 A US 1314142A US 1314142D A US1314142D A US 1314142DA US 1314142 A US1314142 A US 1314142A
- Authority
- US
- United States
- Prior art keywords
- packing
- disks
- glue
- fabric
- ground cork
- 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
- 239000007799 cork Substances 0.000 description 26
- 239000003292 glue Substances 0.000 description 24
- 239000004744 fabric Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 238000005452 bending Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000010985 leather Substances 0.000 description 4
- 241000272525 Anas platyrhynchos Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1043—Subsequent to assembly
- Y10T156/1044—Subsequent to assembly of parallel stacked sheets only
- Y10T156/1048—Subsequent to assembly of parallel stacked sheets only to form dished or receptacle-like product
Definitions
- This invention relates to a process for making piston packing, more particularly of the cupped type.
- the principal object of the present invention is to provide a process for making cupped iston packing of the above character, W ereby the resulting packing will have resiliency to maintain contact with the cylinder walls without the use of expander rings and whereby the packing can be formed Without breaking or being excessively strained in forming.
- Figure 1 is a sectional view of the ground cork and fabric disks employed in making the piston packing
- Fig. 2 a similar v1ew of the ground cork and fabric disks in position ready for forming into packing
- Fig. 3 a fragmentary sectional view of a portion of the formed packing
- Fig. 4 a sectional View of the forming die mold, showing a formed packing therein.
- disks 1 cut from sheets formed of ground cork mixed with a suitable binder and then pressed and disks 2 cut from fabric, preferably duck or canvas.
- the ound cork disks are coated on one side with glue and the fabric disks are coated on both sides with glue and a fabric disk is placed between two ground cork disks, as shown in Fig. 2.
- the combined disks are then placed in a die mold and formed up.
- the die mold may comprise, as shown in Fig. 4; of the drawing, a base member 3, an interior moving member 1, and an interior moving member 5.
- the ground cork and fabric structure is placed in position on the base member 3 while the glue is still unset and by means of a suitable press, the member 41 is first brought into engagement with the packing material.
- the exterior member 5 is then moved to cup the packing, finally assuming the position shown in Fig. 4.
- a nut 6 is applied to the stud 7 secured in the base member 3 and said nut is screwed down so as to hold the packin material clamped between the base mem cr 3 and the member 4.
- the exterior member 5 is held in position by meansof set screws 8 which are then screwed into engagement with an annular recess9 formed in the member 4.
- the die mold containing the packing is heat treated to render insoluble and set the glue, the glue being preferably of such character that heating makes the same insoluble and therefore water and oil proof.
- the packing is then removed from the mold and is now ready for service.
- cupped piston packing which consists in coating disks of ground cork with glue, superimposing said disks, and then pressing the superimposed disks from a flat condition into the cup form while the glue remains unset.
- cupped piston packing which consists in providing disks of pressed ground cork mixed with a suitable binder, applying glue to one side of the disks, then forming piles of two ground cork disks with an intermediate layer of fabric, and in then pressing the pile from a fiat condition into the cup shape while the glue remains unset.
- cupped piston packing which consists in providing disks of pressed ground cork, coating said disks with glue, forming a flat pile of two ground cork disks with an intermediate layer of fabric, then pressing the pile into cup shape by means of a die mold, while the glue remains unset, and in then subjecting the die mold with the included packing to heat, for setting the glue and rendering the same insoluble.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Description
H. C. LOUDENBECK.
PROCESS FOR MAKING PISTON PACKING.
APPLICATION FILED SEPT. Zh 1917.
Patented Aug. 26, 1919.
Herr
UNITED STATES PATENT oEEIcE.
HARRY C. LOUDENBECK, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE WESTINGHOUSE AIR BRAKE COMPANY, OF WILMERDING, PENNSYLVANIA,
A. CORPORATION OF PENNSYLVANIA.
Specification of Letters Patent.
Patented Aug. 26, 1919.
Application filed September 21, 1917. Serial No. 192,485.
To all whom it may concern:
Be it known that I, HARRY C. LOUDEN- BECK, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Processes for Making Piston-Packing, of which the following is a specification.
This invention relates to a process for making piston packing, more particularly of the cupped type.
Leather has heretofore been employed in the manufacture of cupped piston packing, but by reason of the increasing cost and scarcity of leather, it is highly desirable to provide packing of other material.
It is therefore proposed to employ ground cork for this purpose and in my co-pending application Serial No.192,5l0, filed Sep tember 21, 1917, is described a piston packing formed of disks of ground cord with an intermediate layer of fabric.
The principal object of the present invention is to provide a process for making cupped iston packing of the above character, W ereby the resulting packing will have resiliency to maintain contact with the cylinder walls without the use of expander rings and whereby the packing can be formed Without breaking or being excessively strained in forming.
In the accompanying drawing; Figure 1 is a sectional view of the ground cork and fabric disks employed in making the piston packing; Fig. 2 a similar v1ew of the ground cork and fabric disks in position ready for forming into packing; Fig. 3 a fragmentary sectional view of a portion of the formed packing; and Fig. 4 a sectional View of the forming die mold, showing a formed packing therein.
According to my invention, there are provided disks 1 cut from sheets formed of ground cork mixed with a suitable binder and then pressed and disks 2 cut from fabric, preferably duck or canvas.
The ound cork disks are coated on one side with glue and the fabric disks are coated on both sides with glue and a fabric disk is placed between two ground cork disks, as shown in Fig. 2. The combined disks are then placed in a die mold and formed up.
The die mold may comprise, as shown in Fig. 4; of the drawing, a base member 3, an interior moving member 1, and an interior moving member 5. The ground cork and fabric structure is placed in position on the base member 3 while the glue is still unset and by means of a suitable press, the member 41 is first brought into engagement with the packing material. The exterior member 5 is then moved to cup the packing, finally assuming the position shown in Fig. 4. While under pressure exerted by the press, a nut 6 is applied to the stud 7 secured in the base member 3 and said nut is screwed down so as to hold the packin material clamped between the base mem cr 3 and the member 4. The exterior member 5 is held in position by meansof set screws 8 which are then screwed into engagement with an annular recess9 formed in the member 4.
It will now be noted that in the cupping of the packing material, the layers of ground cork and fabric can slide on each. other, so that the material will not be subjected to excessive internal and external strains by the cupping operation.
If disks of the same diameter are used, the outer edges of the disks will assume the relative positions, as shown in Fig. 3, since the bending of the outer layers requires more material due to the larger bending radius. This also serves to indicate how in the formation of packing without sliding layers,
excessive strains are introduced, since it will be evident that the outer portion at the bend must either stretch or break to accommodate the larger bending radius.
After the parts of the die mold are locked together as hereinbefore described, the die mold containing the packing is heat treated to render insoluble and set the glue, the glue being preferably of such character that heating makes the same insoluble and therefore water and oil proof.
The packing is then removed from the mold and is now ready for service.
Having now described my invention, what I claim as new and desire to secure by Lettors Patent, is
1. The process of forming cupped piston packing which consists in coating disks of ground cork with glue, superimposing said disks, and then pressing the superimposed disks from a flat condition into the cup form while the glue remains unset.
2. The process of forming cupped piston packing which consists in providing disks of pressed ground cork mixed with a suitable binder, applying glue to one side of the disks, then forming piles of two ground cork disks with an intermediate layer of fabric, and in then pressing the pile from a fiat condition into the cup shape while the glue remains unset.
3. The process of forming cupped piston packing which consists in providing disks of pressed ground cork, coating said disks with glue, forming a flat pile of two ground cork disks with an intermediate layer of fabric, then pressing the pile into cup shape by means of a die mold, while the glue remains unset, and in then subjecting the die mold with the included packing to heat, for setting the glue and rendering the same insoluble. v
In testimony whereof I have hereunto set my hand.
HARRY C. LOUDENBECK.
Publications (1)
Publication Number | Publication Date |
---|---|
US1314142A true US1314142A (en) | 1919-08-26 |
Family
ID=3381634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1314142D Expired - Lifetime US1314142A (en) | Harry c |
Country Status (1)
Country | Link |
---|---|
US (1) | US1314142A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2635331A (en) * | 1950-02-25 | 1953-04-21 | Dixon T Harbison | Method of forming nonmetallic resilient packing rings |
-
0
- US US1314142D patent/US1314142A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2635331A (en) * | 1950-02-25 | 1953-04-21 | Dixon T Harbison | Method of forming nonmetallic resilient packing rings |
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