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US 5,740,710 AGranted
Device for cutting sheets of material
AssigneeAdolf Mohr Maschinenfabrik GmbH & Co. KG
InventorsHelmut Gross, Adolf Rasch
Life of this patent
Estimating the term…
Abstract
Device for cutting sheets of material, with a counter (12) for the material to rest on, a blade to cut the material, and a holdfast (11) that can be lowered onto the material by a mechanism (10) and raised off it by a spring (6). When the spring in such a device breaks, the holdfast can drop and injure the operator. The object is to prevent such injuries. An interceptor (7, 8, & 9) accordingly brakes the holdfast when the spring that raises it is broken.
Claims11
An arrangement for cutting sheets of material, comprising:
- support means for holding the material;
- a blade spaced from said support means for cutting the material while held in said support means;
- a holdfast adjacent said blade and lowerable onto the material for securing the material to be cut in said support means;
- means connected to said holdfast for lowering said holdfast;
- spring means connected to said holdfast for raising said holdfast off the material;
- and interceptor means on said holdfast for braking said holdfast when said spring means raising said holdfast breaks.
3 more elements
An arrangement for cutting sheets of material, comprising:
- support means for holding the material;
- a blade spaced from said support means for cutting the material while held in said support means;
- a holdfast adjacent said blade and lowerable onto the material for securing the material to be cut in said support means;
- means connected to said holdfast for lowering said holdfast;
- spring means connected to said holdfast for raising said holdfast off the material;
- and interceptor means on said holdfast for braking said holdfast when said spring means raising said holdfast breaks;
- a power train leading to said holdfast;
- and a stationary stop extending into a path of said holdfast when said spring means is broken, said interceptor means comprising a detente component in said power train.
5 more elements
An arrangement for cutting sheets of material, comprising:
- support means for holding the material;
- a blade spaced from said support means for cutting the material while held in said support means;
- a holdfast adjacent said blade and lowerable onto the material for securing the material to be cut in said support means;
- means connected to said holdfast for lowering said holdfast;
- spring means connected to said holdfast for raising said holdfast off the material;
- and interceptor means on said holdfast for braking said holdfast when said spring means raising said holdfast breaks;
- said interceptor means having means for engaging a detente to prevent dropping of said holdfast when said spring means is broken;
- a power train leading to said holdfast;
- a stationary stop extending into a path of said holdfast when said spring means is broken, said interceptor means comprising a detente component in said power train;
- two additional stops, said detente component pivoting in said power train between said two additional stops, said spring means being a first spring;
- a stationary component and a second spring weaker than said first spring, said first spring engaging said stationary component and said detente component and said second spring exerting a force on said detente component in opposition to a force exerted by said first spring;
- a frame for accommodating said holdfast;
- said power train comprising substantially rods having each one end engaging said holdfast;
- angled levers pivoting on said frame and engaging another end of said rods;
- a rod system connecting said levers;
- means operating in conjunction with one of said levers to engage said spring means with said frame and said detente component, said detente component being mounted in said rod system;
- said detente component having a vertex on said rod system, said detente component being angled and pivoting at said vertex on said rod system;
- said detente component having a first arm engaging said spring means;
- said detente component having a second arm with a free end operating in conjunction with said stationary stop;
- said stationary stop having a sliding detente for allowing engagement of said detente component with an interception position of said holdfast;
- said two stops comprising a bolt mounted in said rod system extending remote from an axis of said detente component and extending in a pivoting direction of said detente component;
- said means for lowering said holdfast comprising a hydraulic cylinder pivoting said holdfast.
19 more elements
Dependencies are inferred from the claim text.