Abstract: An improved machine for cutting into small pieces the thin wall material of disposable containers includes parallel, rotating cutting shafts having a plurality of cutting wheels thereon. The cutting wheels are separated by annular spacers which provide a rotating comber surface. There is a spacer comber partially encircling each of the annular spacers which has a lower section having a rounded surface. A cutting wheel comber partially encircles each of the cutting wheels and has a lower end with a rounded portion. The spacer combers having the rounded surface and the cutting wheel combers having the rounded portion prevent the collection of the small pieces within the improved machine.

Abstract: A flexible hinged handle sewn to the closure strip of a multiple ply bag. The hinged handle has a generally U-shaped and a pair of notches pivotably joining a grip member to the legs of the U-shape so that the grip is pivotal to provide a comfortable grasping surface for lifting the bag when filled with a product.

Abstract: A turf anchor stake having a flat shank with a pointed lower end and a headed upper end or two flat shanks connected by a crossbar can be driven through divots into the soil beneath the divots to hold such divots in place until their edge root structure knits with surrounding root structure. To facilitate driving of the stakes the lower ends of the shanks are pointed and lateral projections from the lower end portions of the shanks deter withdrawal of the shanks and lifting of the divots or turf.

Abstract: A machine is capable of cutting into small pieces the thin wall material of a plurality of disposable containers such as plastic bottles or metal cans fed in a first direction one at a time to a cutting section. The cutting section includes a pair of parallel shafts mounted for rotation in opposite directions about the center axes thereof. Each of the shafts rigidly supports a plurality of overlapping cutting wheels for rotation therewith. Each cutting wheel has a plurality of identical cutting teeth thereon having an apex at the maximum diameter and a root at a root diameter of the cutting wheel. Each cutting tooth has a leading surface and a trailing surface which meet at the apex to form a straight edge at the maximum diameter which is parallel with the center axis of the shaft.

Abstract: An apparatus is for crushing at least one of a plurality of metal cans having a predetermined diameter and a predetermined length less than about twice the predetermined diameter. The apparatus includes a pair of cylindrical rollers mounted for rotation in opposite directions about parallel horizontal axes with a predetermined distance therebetween. Each of the rollers has a predetermined roller diameter greater than four times the predetermined diameter of the can. An array of extensions on the cylindrical surface of each of the rollers extends a predetermined height from the cylindrical surface and is separated from adjacent extensions on the cylindrical surface to cause the extensions of the array to cover less than ten percent of the cylindrical surface to allow general alignment of and positioning of the metal cans therebetween.

Abstract: A print pallet composed of a dental tray holding a filler pad of thermoplastic material can be warmed to plasticize such material and inserted into the mouth of a person to be identified to be stamped by the occlusal surfaces of that person's dental arch to imprint a print of such arch occlusal surfaces on the pad. Such print record can be preserved or recorded by various media for later comparison to establish the identity of the person when deceased or incapacitated.

Abstract: A machine is capable of cutting into pieces disposable containers such as plastic bottles and metal cans. A first cutting section includes a pair of parallel shafts mounted for rotation in opposite directions. Each of the shafts supports a plurality of cutting wheels keyed for rotation therewith. The cutting wheels of one shaft overlap the cutting wheels on the other shaft as each cutting wheel is axially separated from axially adjacent cutting wheels thereon by one of the cutting wheels on the other shaft. A comber is aligned with each cutting wheel to provide a gap between the cutting teeth and the end of the comber. The disposable containers are cut into first pieces between the cutting wheels of one shaft and the cutting wheels of the other shaft. The first pieces from the first cutting section pass to a second cutting section to be cut into smaller, second pieces. The invention also includes the method of cutting the disposable containers in pieces.

Abstract: A machine is capable of cutting into pieces a plurality of diposable containers such as plastic bottles and metal cans. The machine includes a loading section, a cutting section and a collecting section. The cutting section includes a pair of parallel shafts mounted for rotation in opposite directions. Each of the shafts supports a plurality of cutting wheels keyed for rotation therewith. The cutting wheels of one shaft overlap the cutting wheels on the other shaft as each cutting wheel is axially separated from axially adjacent cutting wheels thereon by one of the cutting wheels on the other shaft. A plurality of combers in aligned with each cutting wheel to provide a gap between the cutting teeth and the end of the comber. The disposable containers are cut between the cutting wheels of one shaft and the cutting wheels of the other shaft with the pieces passing through the gap between the end of the comber and the cutting wheel teeth.

Abstract: A machine is capable of cutting into pieces disposable containers such as plastic bottles and metal cans. A first cutting section includes a pair of parallel shafts mounted for rotation in opposite directions. Each of the shafts supports a plurality of cutting wheels keyed for rotation therewith. The cutting wheels of one shaft overlap the cutting wheels on the other shaft as each cutting wheel is axially separated from axially adjacent cutting wheels thereon by one of the cutting wheels on the other shaft. A comber is aligned with each cutting wheel to provide a gap between the cutting teeth and the end of the comber. The disposable containers are cut into first pieces between the cutting wheels of one shaft and the cutting wheels of the other shaft. The first pieces from the first cutting section pass to a second cutting section to be cut into smaller, second pieces.

Abstract: A flat uniform thickness or flat sheet of thermoplastic material is heated to deformable, nonresilient, nonliquid condition, shaped over a built-up study model of the jaw ridge of a patient requiring a dental prosthesis and cooled to substantially rigid condition to form a custom dental impression tray.

Abstract: This invention is the method to recover caprolactam from a concentrated nylon 6 chip wash water containing water, cyclic oligomer, and caprolactam. The method comprises feeding the concentrated wash water to a wiped-film evaporator operated at a temperature of from about 200.degree. C. to 300.degree. C. and a pressure from about 10 to about 250 Torr, thereby separating the wash water into (a) an overhead stream of water and caprolactam and (b) a bottom stream of caprolactam and cyclic oligomers, then recovering the caprolactam from the overhead stream. The caprolactam in the bottom stream can also be recovered, and the cyclic oligomers depolymerized to caprolactam for recovery.

Abstract: A two-stage hydrolysis process for polymerizing epsilon-caprolactam is disclosed comprising a first stage from a temperature of about 180.degree. C.-260.degree. C., a pressure of 20 to 150 psig, for a period of about 0.5 to 4 hours, then before equilibrium conditions are reached a second stage at a temperature of about 200.degree. C.-260.degree. C., a pressure of about 100-900 Torr for a period of about 2 to 15 hours, while continuously removing most of the water so that water is removed both during hydrolyzation and during the subsequent polycondensation, whereby the cyclic dimer content of the shaped polymer article is below 0.2 percent by weight.

Abstract: A shredding machine having a housing, a first and a second parallel spaced apart rotatably driven shafts rotatably mounted in the housing at end plates fixedly attached to the housing, driving means in the housing and operably connected to the shafts to drive the shafts counter to each other, a plurality of interfitting cutters having annular cutting surfaces disposed on the shafts and locked against rotation on the shafts by locking means, at least two support rods fixedly attached at their ends to the end plates, the support rods being parallel to each other and to the first and second shafts, a comber interposed between each of the cutters, each comber having at least two openings therethrough, one support shaft in registration with and of slightly smaller diameter than one of the openings to provide mechanical support for each comber, the first and second shafts in registration with and of slightly smaller diameter than another of the openings in each comber to provide further mechanical support for each