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US 4,721,026 AGranted
Mortar
AssigneeEsperanza y Cia, S.A.
InventorInigo Arana Ibarra
Life of this patent
Estimating the term…
Abstract
A mortar having a barrel pivotally mounted on a platform and having a tripod and a rear set of legs is disclosed. The tripod has three parallel legs, the center one of which houses a spindle for changing the elevation of the barrel. Both the tripod and the rear set of legs are pivotally mounted on the platform. The arrangement of the tripod and rear legs are such that they minimize the number of obstructions normally associated with a mortar.
Claims11
A mortar, characterized because it is comprised of a barrel mounted upon a base platform with:
- (a) means of spacial pivotal linking between said barrel and said base platform;
- (b) means for tipping the barrel in a vertical plane which comprises:
- (b.sub.1) a tripod with parallel legs that are pivotally attached to said base platform, and fitted with a raising mechanism, said parallel legs extending from and being parallel from said base platform to said raising mechanism;
- (b.sub.2) a lower stop, located upon one of the tripod legs, to act as a minimum elevation angle limiter to operate in conjunction with:
- (b.sub.3) a main spindle which is driven by the raising mechanism and makes the barrel tip, where said spindle is connected to said barrel through the cross control mechanism which travels in relation thereto thanks to a guide collar;
- (b.sub.4) a set of rear legs which are parallel and likewise pivotally attached to said base platform, and mounted upon the spindle each with a set of pressure rings, said rear legs extending from and being parallel from said base platform to said spindle;
- (c) a mechanism for sweep control for crosswise adjustment of the barrel.
4 more elements
A mortar in full accordance with the first claim and characterized because the sweep control mechanism is structured from:
- (a) a support fork that is pivotally attached to the head of the spindle;
- (b) a control spindle that is pivotally attached to the guide collar which travels on the barrel;
- (c) a cross spindle mounted upon the arms of said support fork and possessing its own drive arrangement which, upon rotating, moves the control fork in a crosswise direction, and with it, the collar and barrel;
- (d) a levelling mechanism.
1 more element
A mortar, comprised of a barrel mounted upon a base platform and further comprising:
- (a) means of spatial pivotal linking between said barrel and said base platform;
- (b) means for tipping the barrel in a vertical plane which comprises:
- (1) a tripod with parallel legs that are pivotally attached to said base platform, and fitted with a raising mechanism;
- (2) a lower stop, located upon one of the tripod legs, to act as a minimum elevation angle limiter to operate in conjunction with:
- (3) a main spindle which is driven by the raising mechanism and makes the barrel tip, where said spindle is connected to said barrel through a cross control mechanism which travels in relation thereto thanks to a guide collar;
- (4) a set of rear legs which are parallel and likewise pivotally attached to said base platform, and mounted upon the spindle, each with a set of pressure rings;
- (5) the lower stop fitted onto one of the tripod parallel legs within which the spindle travels coaxially, said lower stop comprised of:
- (i) a stop sleeve located inside the leg portion and positionable by:
- (ii) a stop ring assembled upon the outside of said leg portion in such a manner that during the travel of said spindle when driven by said means for tipping, said spindle abuts the inside sleeve and thus defines the minimum elevation position;
- and
- (iii) a mechanism for sweep control for crosswise adjustment of the barrel.
8 more elements
A mortar, comprised of a barrel mounted upon a base platform and further comprising:
- (a) means of spatial pivotal linking between said barrel and said base platform;
- (b) means for tipping the barrel in a vertical plane which comprises:
- (1) a tripod with parallel legs that are pivotally attached to said base platform, and fitted with a raising mechanism;
- (2) a lower stop, located upon one of the tripod legs, to act as a minimum elevation angle limiter to operate in conjunction with:
- (3) a main spindle which is driven by the raising mechanism and makes the barrel tip, where said spindle is connected to said barrel through a cross control mechanism which travels in relation thereto thanks to a guide collar;
- (4) a set of rear legs which are parallel and likewise pivotally attached to said base platform, and mounted upon the spindle, each with a set of pressure rings;
- (c) a mechanism for sweep control for crosswise adjustment of the barrel, said sweep control comprising:
- (1) a support fork that is pivotally attached to the head of the spindle;
- (2) a control spindle that is pivotally attached to the guide collar which travels on the barrel;
- (3) a cross spindle mounted upon the arms of said support fork and possessing its own drive arrangement which, upon rotating, moves the control fork in a crosswise direction, and with it, the collar and barrel;
- (4) a levelling mechanism, the levelling mechanism comprised of:
- (i) a sleeve which is pivotally attached to the support fork and in whose interior there slides:
- (ii) a spindle, whose head is pivotally attached to the main spindle at a point above that of the pivotal attachment between the support fork and the spindle head.
10 more elements
A mortar, comprised of a barrel mounted upon a base platform and further comprising:
- (a) means of spatial pivotal linking between said barrel and said base platform;
- (b) means for tipping the barrel in a vertical plane which comprises:
- (1) a tripod with parallel legs that are pivotally attached to said base platform, and fitted with a raising mechanism;
- (2) a lower stop, located upon one of the tripod legs, to act as a minimum elevation angle limiter to operate in conjunction with:
- (3) a main spindle which is driven by the raising mechanism and makes the barrel tip, where said spindle is connected to said barrel through a cross control mechanism which travels in relation thereto thanks to a guide collar;
- (4) a set of rear legs which are parallel and likewise pivotally attached to said base platform, and mounted upon the spindle, each with a set of pressure rings;
- (c) a mechanism for sweep control for crosswise adjustment of the barrel;
- (d) the mortar laying mechanisms are provided with a control handwheel which is comprised of:
- (1) a rim with a hollow inside and two diametrically opposed openings;
- (2) a handle whose length is approximately equal to the diameter of the rim and which turns inside the first of the said opening in such rim;
- (3) means for holding the handle in its working position and in its idle position.
8 more elements
Dependencies are inferred from the claim text.