Drum skinner
First Claim
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1. Hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass, comprising:
- a carcass-abutting and slide surface;
a drum rotatably mounted adjacent said carcass-abutting and slide surface, said drum having an axially orientated ditch opening through its periphery;
clamping means on said drum at said ditch for clamping an edge flap of skin on the hog carcass;
a skin scraper positioned adjacent said ditch;
extensible-retractable skin flap gripping and infeeding means in said ditch extensible out of said ditch and retractable into said ditch for gripping and infeeding the edge flap into said ditch to allow clamping thereof whereby upon an edge flap of skin being gripped and pulled into said ditch and clamped, rotation of said drum through a revolution causes the carcass to rotate on said abutting and slide surface and the skin to be scraped off the carcass by said scraper.
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Abstract
A hog carcass skinning apparatus is disclosed including a rotatably mounted and generally vertically positioned drum having an axially oriented ditch opening in its periphery. A clamp is carried by the drum in the ditch for clamping an edge flap of skin on the hog carcass. A floating skin scraper is positioned adjacent the ditch, and a skin flap gripping and infeeding device is positioned in the ditch for infeeding the edge flap into the ditch to allow clamping thereof so that upon rotation of the drum, the carcass is caused to rotate and the skin is scraped off the carcass by the scraper.
19 Citations
62 Claims
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1. Hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass, comprising:
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a carcass-abutting and slide surface; a drum rotatably mounted adjacent said carcass-abutting and slide surface, said drum having an axially orientated ditch opening through its periphery; clamping means on said drum at said ditch for clamping an edge flap of skin on the hog carcass; a skin scraper positioned adjacent said ditch; extensible-retractable skin flap gripping and infeeding means in said ditch extensible out of said ditch and retractable into said ditch for gripping and infeeding the edge flap into said ditch to allow clamping thereof whereby upon an edge flap of skin being gripped and pulled into said ditch and clamped, rotation of said drum through a revolution causes the carcass to rotate on said abutting and slide surface and the skin to be scraped off the carcass by said scraper. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass, comprising:
- a generally vertically oriented, carcass-abutting and slide surface;
said carcass-abutting and slide surface forming a vertical slot;
a generally vertically, oriented rotational drum adjacent said carcass-abutting and slide surface at said slot;
said drum having an axially oriented ditch in its periphery, and clamping means in said ditch for clamping an edge flap of skin on the hog carcass;
said ditch and clamping means being movable from a position aligned with said slot, through a revolution of said drum, back to said position;
a skin scraper along said slot;
said clamping means including a fixed jaw in said ditch;
a cooperative shiftable jaw in said ditch shiftable between an open position spaced from said fixed jaw to a closed position at said fixed jaw;
power means to shift said shiftable jaw between said positions;
wedging means within the periphery of said drum movable radially outwardly relative to said drum for operation against said shiftable jaw to lock a skin flap between said jaws; and
power means for operating said wedging means whereby, rotation of said drum through a revolution, with a clamped edge flap of skin of a hog carcass in said ditch, causes the hog carcass to rotate on said abutting and slide surface while the skin is scraped off the carcass by said scraper. - View Dependent Claims (10)
- a generally vertically oriented, carcass-abutting and slide surface;
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11. Hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass, comprising:
- a generally vertically oriented carcass-abutting and slide surface;
said carcass-abutting and slide surface forming a vertical slot;
a generally vertically oriented, rotational drum adjacent said carcass-abutting and slide surface at said slot;
said drum having an axially oriented ditch in its periphery, and clamping means in said ditch for clamping an edge flap of skin on the hog carcass;
said ditch and clamping means being movable from a position aligned with said slot, through a revolution of said drum, back to said position;
a floating skin scraper along said slot;
a mount for said scraper, said mount being movable with respect to said drum periphery for varying the spacing between said scraper and said drum periphery; and
controllably variable biasing means engaging said mount for variably biasing said floating skin scraper in controlled predetermined amounts relative to said drum periphery as said drum is rotated during skinning. - View Dependent Claims (12, 13, 14)
- a generally vertically oriented carcass-abutting and slide surface;
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15. A hog carcass skinning apparatus comprising:
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a support frame; a drum rotatably mounted on said support frame in a position angled slightly from vertical, said drum having a ditch extending longitudinally along and opening through the peripheral surface thereof; skin flap retracting means mounted within said drum at said ditch for gripping a skin flap on the carcass and for retracting the skin flap into said drum ditch; skin clamping means positioned at said ditch for clamping the skin flap to the drum at said ditch after said skin flap is retracted by said retracting means; a skin scraper floatably mounted on said frame adjacent said ditch and spaced from the periphery of said drum from separating the skin from said carcass as said drum rotates. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An improved hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass, said apparatus being of the type including a generally vertically positioned drum having an axially orientated ditch opening through its periphery and clamping means for clamping an edge flap of skin on the hog carcass and a skin scraper positioned adjacent said ditch, wherein the improvement comprises:
at least one extensible and retractable skin flap gripping and infeeding means spaced in said ditch for gripping and infeeding the edge flap of skin into said ditch to allow clamping thereof without wrinkling of said edge flap of skin. - View Dependent Claims (39, 40, 41, 42, 43, 44)
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45. A method of removing the skin with retained hair directly from a hog carcass comprising the steps of:
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suspending a hog by its rear hocks from a conveyor so that said hog may rotate; killing and bleeding the hog; manually removing some of the skin from the carcass at the rear hock and head areas; slitting the skin of the carcass along the teat strip to provide a skin flap; placing the edge of the skin flap in a skin flap gripping and infeeding means; retracting the infeeding means into a longitudinal ditch opening through the periphery of a skinning drum; clamping the skin flap within the drum; rotating the drum; and scraping the skin from the hog carcass as the skin is pulled around the drum and the hog carcass rotates. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53)
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54. An improved hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass which has been preliminarily prepared by slitting the skin of the carcass along the teat strip to provide a skin flap, said apparatus being of the type including a support frame, a drum rotatably mounted on the support frame in a position angled slightly from vertical, the drum having a ditch extending longitudinally along and opening through the peripheral surface thereof;
- and skin clamping means positioned at said ditch for clamping the skin flap to the drum at the ditch wherein the improvement comprises;
a skin scraper adjustably mounted on said frame and movable towards and away from the drum for exerting a pressure on the skin, holding the skin against the drum and scraping the skin from the hog carcass as the skin is pulled around the drum and the hog carcass rotates; and means operatively engaging said skin scraper for varying the pressure of said skin scraper against said skin in a controlled manner and for varying the position of said scraper relative to said drum in a predetermined, controlled manner during skinning. - View Dependent Claims (55, 56, 57, 58, 59)
- and skin clamping means positioned at said ditch for clamping the skin flap to the drum at the ditch wherein the improvement comprises;
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60. Hog carcass skinning apparatus for removing the skin with retained hair directly from a hog carcass, comprising:
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a carcass-abutting and slide surface; a generally vertical drum rotatably mounted adjacent said carcass-abutting and slide surface, said drum having an axially orientated ditch opening through its periphery; clamping means on said drum at said ditch for clamping an edge flap of skin on the hog carcass so that upon rotation of said drum said hog carcass will rotate; a skin scraper positioned adjacent said ditch for scraping the skin of the carcass, said scraper being mounted for angular movement radially toward and away from said drum during skinning; pressure means operatively engaging said scraper for exerting a pressure on said scraper during rotation of said drum and during skinning; and control means connected to said pressure means for varying the pressure exerted by said pressure means on said scraper during rotation of said drum and said hog carcass so that the pressure exerted on the skin by the scraper and the angle of the scraper relative to the drum varies as a function of drum and hog carcass position. - View Dependent Claims (61, 62)
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Specification