CA1171019A - Milking inflations - Google Patents
Milking inflationsInfo
- Publication number
- CA1171019A CA1171019A CA000394846A CA394846A CA1171019A CA 1171019 A CA1171019 A CA 1171019A CA 000394846 A CA000394846 A CA 000394846A CA 394846 A CA394846 A CA 394846A CA 1171019 A CA1171019 A CA 1171019A
- Authority
- CA
- Canada
- Prior art keywords
- inflation
- teat
- body part
- teat cup
- shell
- 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
Links
Abstract
ABSTRACT OF DISCLOSURE
A teat cup milking inflation is disclosed which is constructed from a natural or synthetic rubber material or like elastomeric plastics material and arranged for location in a rigid shell to which a pulsating vacuum/air pressure is applied for flexing of the inflation when located on an animal's teat; the main part of the inflation having a double co-axial barrel form with the upper barrel locatable on the animal's teat and the lower barrel communicating with the upper teat barrel and a lower milk outlet tube part to which suction is applied, both barrel parts being located within the rigid shell and the lower barrel part being also at least partially oollapsible under the pulsating vacuum/air pressure.
A teat cup milking inflation is disclosed which is constructed from a natural or synthetic rubber material or like elastomeric plastics material and arranged for location in a rigid shell to which a pulsating vacuum/air pressure is applied for flexing of the inflation when located on an animal's teat; the main part of the inflation having a double co-axial barrel form with the upper barrel locatable on the animal's teat and the lower barrel communicating with the upper teat barrel and a lower milk outlet tube part to which suction is applied, both barrel parts being located within the rigid shell and the lower barrel part being also at least partially oollapsible under the pulsating vacuum/air pressure.
Description
This invention relates to milking inflations for dairy milking equipment.
Various problems hav~ existed over the years in connection with the milking of cows, and numerous forms of milking inflations and milking teat cup assemblies have been devised in an endeavour to combat such prob-lems. One problem that does not appear to have been overcome is that of a tendency for milking inflations or teat cups to "crawl" or move lengthwise of an animal's teat due to the vacuum applied to the milk line and the pulsating action applied to the milk cup assembl~, and this can cause discomfort to some animals and in particular those with shorter teats.
Accordingly it is one object of this invention I5 to provlde a milking inflation overcoming any tendency to "crawl" during milking operations.
Another continuing problem arislng in dairying operations is that of mastitls developing in the cow's teats, and it is another object of this invention to provide an improved teat cup miIking inflation which it is believed will assist in the prevention of mastitis in an animal.
,.
Other and more par~icular objects and advantages of the invention will become apparent from the ensuing description.
According to this invention therefore there is 1 ~ 7 ~
provided a teat cup milking inflation comprising a resilient upright tubular body part arranged to be located and contained ~ithin an upright rigid tubular shell with upper and lower portions of the body part being respectively seal-ably engageable with upper and lower parts of the shell~ an annular space being formed about the contained body part and to which a pulsating vacuum or pressure can be applied~ said contained body part being divided into an upper section and a communicating lower section by an intermediate waisted portion with the upper section arranged for location about an animal's teat and having an upper collar part defining the inflation mouth, and the lower section having its lower end part connectable to a vacuum milk line; said waisted junction forming at least a partial abutment for the teat lower end part to restrict upward crawl of the inflation and being further provided with at least one longitudinally extending groove or recess in the inner wall surface of the waisted junction to relieve vacuum pressure concentration at the teat end.
One preferred form of the invention will now be described by way of example and with reference to the accompanying drawing~ which is a longitudinal cross-sectional view of an inflation in accordance with the invention and lo-cated in a teat cup shell for milking operations.
The inflation may be constructed by any suitable means from such as a natural or synthetic rubber material or from an elastomeric vinyl plastics material such as a polyvinyl chloride or other suitable plastlcs material ~ having properties desirable in the : ,~
,, ~ t 71~
construction of milking inflations i.e. desirable resilient qualities and qualities facilitating cleaning and sterilising of the inflation without the inflation absorbing or retaining any of the cleaning or sterilis-ing agents which would irritate an animal or contaminatemilk received from the animal.
The inflation has a resilient tubular body part 1 which merges into an upper integral head part 2 includ-ing an inwardly directed flange or collar 3 having an inner periphery defining the in~lation mouth 4. The head part 2 further has an outer downwardly extending annular flange 5 spaced from the body part 1 and locat-able about a teat cup shell 6 within which the inflation body part 1 is contained. The teat cup shell 6 ma~ be of metal or any other suitable rigid material and the .
-outer flange 5 is arranged to seal on the upper outer part of the shell 6, the shell being cylindrical in form.
The lower end portion of the body part 1 is sealably engaged with and extends through an apertured . . -lower end po~tion 7 of the teat cup shell 6 and may beprovided with two or more outer annular strengthening and sealiny ribs lain the usual manner. The teat cup shell 6 is of larger diameter than the inflation body part 1 so as to provide an annular space 8 thereabout between the upper and lower sealed portions and to ~hich pulsating vacuum/air can be applied by way of an ~ ~ :
.
;
o ~ 9 appropriate inlet 90 A tubular extension lO to the lower end portion of the contained body part 1 is provided for connection to a main vacuum milk line.
The invention particu]arly lies in the provision of a two-section or two-barrel body part contained within the teat cup shell by providing a waisted intermediate portion 11 having a passage or bore 12 connecting the upper section 13 with the lower section 14 and being strengthened by a thickening of the wall at the waisted portion and/or at the top of the lower section to prevent collapsing of the passage 12 in operation.
The upper section 13 is shaped to receive an animal's teat and is shorter in length than conventional milking inflations (a conventional teat cup shell can be utilised?, and the lower outlet end of an animal's teat can (although not necessarily) abut the lower end 13a of the upper section at the wai~ted intermediate portion 11. The wall thickness of the lower section 2Q 14 is also preferably slightly thicker than the wall thickness of the upper teat receiving section 13 so that the upper section is more readily collapsible and flexible in use for effective milking, but the lower section 14 is still flexible and resilient and at least partially collapsible.
The upper section 13 is thus designed to collapse around a teat during pulsation/ and, for efficient ', 1 1 711 01~
application of vacuum to the lo~er end of the teat, the inner wall defining the bore 12 of the intermedi-ate waisted portion 11 can be provided with at least one but preferably two or more yrooves or recesses 15 facilitating communication between the upper and lower sections 13, 14, particularly for cases where the lower end of the animal's teat abuts the lower end 13a of the upper section 13.
With a variation in animal teat size, an effi cient collapse of the inflation for squeezing of the animal's teat is not always possible, and accordingly the prc,vision of a second collapsible chamber 14a in the lower seciion 14 of the inflation body 1 contained within the teat cup shell 6 provides a compensa~ing effect, and a rest period during the pulsation cycle is a~sured and damage to the animal's teat orifice is less liXely.
Furthert the provision of the shortened teat engaging upper section 13 of the inflation provides a positive limit to the amount of upward travel of the inflation that can take place during milking operations, and abutment of the orifice end o~ the animal's teat against the lower end 13a of the infla-tion upper section 13 ensures that the orifice closes tightly in between milk let-down cycles determined by the pulsation rate.
:, . ...
A particular form of the invention has been described and illustrated by way of example, but it will be appreciated that other variations of and .
modifications to the invention can take place without departing from the scope of the appended claims. The present invention particularly lies in the provision of the two-section inflation body, and variations in the collar, teat cup shell engaging parts, and other parts of the inflation can take place.
.
, '' ' ' ~ ' ' ., .' :.' ,
Various problems hav~ existed over the years in connection with the milking of cows, and numerous forms of milking inflations and milking teat cup assemblies have been devised in an endeavour to combat such prob-lems. One problem that does not appear to have been overcome is that of a tendency for milking inflations or teat cups to "crawl" or move lengthwise of an animal's teat due to the vacuum applied to the milk line and the pulsating action applied to the milk cup assembl~, and this can cause discomfort to some animals and in particular those with shorter teats.
Accordingly it is one object of this invention I5 to provlde a milking inflation overcoming any tendency to "crawl" during milking operations.
Another continuing problem arislng in dairying operations is that of mastitls developing in the cow's teats, and it is another object of this invention to provide an improved teat cup miIking inflation which it is believed will assist in the prevention of mastitis in an animal.
,.
Other and more par~icular objects and advantages of the invention will become apparent from the ensuing description.
According to this invention therefore there is 1 ~ 7 ~
provided a teat cup milking inflation comprising a resilient upright tubular body part arranged to be located and contained ~ithin an upright rigid tubular shell with upper and lower portions of the body part being respectively seal-ably engageable with upper and lower parts of the shell~ an annular space being formed about the contained body part and to which a pulsating vacuum or pressure can be applied~ said contained body part being divided into an upper section and a communicating lower section by an intermediate waisted portion with the upper section arranged for location about an animal's teat and having an upper collar part defining the inflation mouth, and the lower section having its lower end part connectable to a vacuum milk line; said waisted junction forming at least a partial abutment for the teat lower end part to restrict upward crawl of the inflation and being further provided with at least one longitudinally extending groove or recess in the inner wall surface of the waisted junction to relieve vacuum pressure concentration at the teat end.
One preferred form of the invention will now be described by way of example and with reference to the accompanying drawing~ which is a longitudinal cross-sectional view of an inflation in accordance with the invention and lo-cated in a teat cup shell for milking operations.
The inflation may be constructed by any suitable means from such as a natural or synthetic rubber material or from an elastomeric vinyl plastics material such as a polyvinyl chloride or other suitable plastlcs material ~ having properties desirable in the : ,~
,, ~ t 71~
construction of milking inflations i.e. desirable resilient qualities and qualities facilitating cleaning and sterilising of the inflation without the inflation absorbing or retaining any of the cleaning or sterilis-ing agents which would irritate an animal or contaminatemilk received from the animal.
The inflation has a resilient tubular body part 1 which merges into an upper integral head part 2 includ-ing an inwardly directed flange or collar 3 having an inner periphery defining the in~lation mouth 4. The head part 2 further has an outer downwardly extending annular flange 5 spaced from the body part 1 and locat-able about a teat cup shell 6 within which the inflation body part 1 is contained. The teat cup shell 6 ma~ be of metal or any other suitable rigid material and the .
-outer flange 5 is arranged to seal on the upper outer part of the shell 6, the shell being cylindrical in form.
The lower end portion of the body part 1 is sealably engaged with and extends through an apertured . . -lower end po~tion 7 of the teat cup shell 6 and may beprovided with two or more outer annular strengthening and sealiny ribs lain the usual manner. The teat cup shell 6 is of larger diameter than the inflation body part 1 so as to provide an annular space 8 thereabout between the upper and lower sealed portions and to ~hich pulsating vacuum/air can be applied by way of an ~ ~ :
.
;
o ~ 9 appropriate inlet 90 A tubular extension lO to the lower end portion of the contained body part 1 is provided for connection to a main vacuum milk line.
The invention particu]arly lies in the provision of a two-section or two-barrel body part contained within the teat cup shell by providing a waisted intermediate portion 11 having a passage or bore 12 connecting the upper section 13 with the lower section 14 and being strengthened by a thickening of the wall at the waisted portion and/or at the top of the lower section to prevent collapsing of the passage 12 in operation.
The upper section 13 is shaped to receive an animal's teat and is shorter in length than conventional milking inflations (a conventional teat cup shell can be utilised?, and the lower outlet end of an animal's teat can (although not necessarily) abut the lower end 13a of the upper section at the wai~ted intermediate portion 11. The wall thickness of the lower section 2Q 14 is also preferably slightly thicker than the wall thickness of the upper teat receiving section 13 so that the upper section is more readily collapsible and flexible in use for effective milking, but the lower section 14 is still flexible and resilient and at least partially collapsible.
The upper section 13 is thus designed to collapse around a teat during pulsation/ and, for efficient ', 1 1 711 01~
application of vacuum to the lo~er end of the teat, the inner wall defining the bore 12 of the intermedi-ate waisted portion 11 can be provided with at least one but preferably two or more yrooves or recesses 15 facilitating communication between the upper and lower sections 13, 14, particularly for cases where the lower end of the animal's teat abuts the lower end 13a of the upper section 13.
With a variation in animal teat size, an effi cient collapse of the inflation for squeezing of the animal's teat is not always possible, and accordingly the prc,vision of a second collapsible chamber 14a in the lower seciion 14 of the inflation body 1 contained within the teat cup shell 6 provides a compensa~ing effect, and a rest period during the pulsation cycle is a~sured and damage to the animal's teat orifice is less liXely.
Furthert the provision of the shortened teat engaging upper section 13 of the inflation provides a positive limit to the amount of upward travel of the inflation that can take place during milking operations, and abutment of the orifice end o~ the animal's teat against the lower end 13a of the infla-tion upper section 13 ensures that the orifice closes tightly in between milk let-down cycles determined by the pulsation rate.
:, . ...
A particular form of the invention has been described and illustrated by way of example, but it will be appreciated that other variations of and .
modifications to the invention can take place without departing from the scope of the appended claims. The present invention particularly lies in the provision of the two-section inflation body, and variations in the collar, teat cup shell engaging parts, and other parts of the inflation can take place.
.
, '' ' ' ~ ' ' ., .' :.' ,
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A teat cup milking inflation comprising a resilient upright tubular body part arranged to be located and contained within an upright rigid tubular shell with upper and lower portions of the body part being respectively sealably engageable with upper and lower parts of the shell, an annular space being formed about the contained body part and to which a pulsating vacuum or pressure can be applied, said contained body part being divided into an upper section and a communi-cating lower section by an intermediate waisted junction portion having a passage communicating with the upper and lower sections, the upper section being arranged for location about an animal's teat and having an upper collar part defining the inflation mouth, and the lower section having its lower end part connectable to a vacuum milk line; said waisted junction forming at least a partial abutment for the teat lower end part to restrict upward crawl of the inflation and being further provided with at least one longitudinally extending groove or recess in the inner wall surface of the wasted junction to relieve vacuum pressure concentration at the teat end.
2. A teat cup milking inflation as claimed in claim 1 wherein the inflation tubular body part merges into an upper integral head part including an inwardly directed flange forming the collar part having an inner periphery defining the inflation mouth, the head part having an outer downwardly extending annular flange space from the body part and locatable about the upper outer part of the teat cup shell for sealing engagement therewith, the shell being cylindrical in form.
3. A teat cup milking inflation as claimed in claim 1 wherein the lower end portion of the inflation body part is sealably engaged with and extends through an apertured lower and portion of the teat cup shell, a tubular extension of said inflation lower end portion being arranged to extend below and beyond the shell for connection to a vacuum milk line.
4. A teat cup milking inflation as claimed in claim 1, wherein the wall of the inflation body part At the waisted junction portion is strengthened by thickening to prevent collapse of the passage or bore at said waisted junction portion between the upper and lower sections of the body part.
5. A teat cup milking inflation as claimed in claim 1, wherein the wall thickness of the lower section is slightly greater than the wall thickness of the upper section of the inflation body part whilst remaining flexible and resilient.
6. A teat cup milking inflation as claimed in claim 1, wherein the length of the upper teat receiving section of the body part is shorter than the length of conventional milking inflation such that in use and operation and the lower orifice end of an animal's teat abuts the inner lower end of said upper section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000394846A CA1171019A (en) | 1982-01-25 | 1982-01-25 | Milking inflations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000394846A CA1171019A (en) | 1982-01-25 | 1982-01-25 | Milking inflations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1171019A true CA1171019A (en) | 1984-07-17 |
Family
ID=4121901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000394846A Expired CA1171019A (en) | 1982-01-25 | 1982-01-25 | Milking inflations |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1171019A (en) |
-
1982
- 1982-01-25 CA CA000394846A patent/CA1171019A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |