Abstract: A pneumatic percussion rock drilling hammer has a tubular housing for connection to a drill rod through which compressed air is introduced, the shank of a drill bit with an anvil at the top being slidable in the bottom of the housing, a piston being reciprocally slidable in the housing. Enlargements of the internal diameter of the housing define top, central and bottom pressure chambers. Air from the drill rod passes through a feed tube to an upper axial passage in the piston, and on the down-stroke of the piston a lower axial passage therein engages a sliding seal tube leading to an air passage through the bit. Pressure ports in the piston direct air from the piston's upper axial passage to the top pressure chamber when the piston is raised, and to the bottom pressure chamber when the piston is lowered, and exhaust ports in the piston conduct air between its lower axial passage and the central pressure chamber and from the central chamber to the top pressure chamber when the piston is lowered.

Abstract: A method of pneumatically feeding material in succession, through separators, to receiving stations, with conveying air being discharged from the system only at the last separator in the circuit. Conveying is stopped when the material reaches a predetermined level in the last separator, but commences again when the material falls below that level, which can be achieved by feeding material back through the conduit to the feed station. The apparatus has a series of separators, the last of which filters out exhaust air, with valves responsive to the level of material in the last separator or a pressure rise in the conduit, to stop conveying and to blow back through the conduit to clear the last separator.

Abstract: A substantially sealed electrolyte container is provided for electroplating articles, and an evacuating means is provided for evacuating the space above the electrolyte surface in the electrolyte container. The article to be electroplated forms the anode or cathode electrode. The electrolyte container is subdivided by porous partitions, which do not disturb the electrical field of force, into cathode and anode chambers, and separate gas extraction means are provided for said chambers. Beneath the electrolyte level in the cathode and anode chambers electrolyte extraction and supply means are provided by means of which the electrolyte is extracted, degassed and returned to the cathode and anode chambers.

Abstract: For casting large concrete articles, a wheel-mounted main frame supports a mould assembly which can be rotated about a horizontal axis, and also raised and lowered. This assembly has two main mould sections oppositely arranged so that when one faces upwards the other faces downwards. A removable mould section fitted to each main mould section forms a complete mould capable, when uppermost, of receiving concrete to be cast. The mould assembly may then be inverted and lowered to a support, and the removable mould section disconnected to serve as a pallet for the cast article. The mould assembly may be raised, concrete may be cast in the other mould, which is uppermost, and the main frame may be moved clear of the deposited cast article.

Abstract: The invention provides an ensiling agent which contains, based on the total quantity of active ingredients, a mixture of from 50 to 90% by weight of salts of formic acid and from 10 to 50% by weight of hexamethylene tetramine or other compounds which slowly and continuously release formaldehyde during the fermentation of fodder plants.The invention further provides a process for the fermentation of fodder plants in which from 0.1 to 0.5% by weight of an ensiling agent based on the weight of green fodder, is added to the material which is to be ensiled, the proportion of hexamethylene tetramine or other compounds which slowly and continuously release formaldehyde during fermentation, not exceeding 0.1% by weight, based on the weight of green fodder.Such ensiling agents are useful for fermenting fodder plants, in particular these which are difficult to convert into silage.

Abstract: The control system is of the type which is manually controlled by a suspended control box. Directional errors arise when the control box is twisted relative to the installation being controlled since the controls on the control box no longer have their original meaning. A direction indicating mechanism is therefore provided which comprises an indicating member mounted within the control box and visible to an operator, which indicating member is held against rotation relative to the installation but is able to rotate relative to the control box itself.

Abstract: A sampling apparatus is provided comprising a pump having duplex independently valved first and second inlets and a common discharge outlet, the first inlet being adapted to be connected to the vascular system of a patient via an indwelling catheter or like semi-permanent connection while the second inlet is adapted for connection to a source of normal saline. A series of collector vessels is provided for receiving fluid discharging from the pump discharge outlet. The apparatus is operated in accordance with a preselected program whereby at prescribed intervals the pump is caused to withdraw a blood sample of chosen volume through the first inlet and to discharge it to a collector vessel and thereafter to draw saline from the second inlet to flush the pump while discharging the flushings to a separate collector vessel. Preferably, the collector vessels are disposed in a rotary indexing carrier adapted to bring each collector vessel in turn into position under the pump discharge outlet.

Abstract: A method of preventing aerobic decomposition processes and fermented fodder, and particularly, carbohydrate-containing silages is disclosed. The method involves adding benzoic acid or its salts, metal formates, and alkali salts of sulphurous acid, either individually or in an admixture, to the fodder during storage or to the silage after removal from storage in such a quantity that the fermented fodder contains from about 100 to 1000 ppm of benzoic acid, from 500 to 3000 ppm of metal formate, and from about 75 to 750 ppm of alkali salts of sulphurous acid. The combination of chemicals suppresses secondary aerobic fermentation processes through a synergistic effect.

Abstract: A begonia cultivar having light pink tepals giving the appearance of azalea blossoms.

Abstract: An African violet plant having purple-red, star shaped flowers on strong, erect peduncles to form a large, solid flower head above the foliage, with flowering being continuous.

Abstract: A novel African violet characterized by its large, pink blossoms borne on strong stems and over a long period of time.

Abstract: A distinct African Violet plant having strong and erect flower stems, flowers which are medium blue in flower color and relatively large and star-shaped in form, uniform flowering, and generally round, medium green foliage.

Abstract: A spider chrysanthemum characterized by its white ray florets and ability to be flowered throughout the year.

Abstract: A poinsettia plant having upright growth with vigorous self branching in all seasons, from the base to the terminal tip of the plant. There is complete flowering of each shoot, and uniform flowering response from bottom to top. The cultivar has excellent keeping qualities, cream white bract color, and fast and uniform rooting from an abundance of cuttings from each plant. The self branching is initiated at fully developed nodes 4"-5" above the soil line in 4" pots, with 6 to 8 mature leaves, and this is believed to be an unique characteristic.

Abstract: An induced mutation of Frost characterized by its yellow ray florets.

Abstract: A poinsettia cultivar which appears to be a tetraploid due to its heavy thick leaves, stiff thick stems and the appearance of the cyathias. The bract color is deep, bright red, and the cultivar is also characterized by fast rooting, excellent cutting production, self branching habit, and long lasting bracts and foliage.

Abstract: A chrysanthemum plant having flat capitulum form and pompon capitulum type, bronze ray floret color; upright branching habit and relatively tall plant height; permanence of inflorescence of 14-21 days, and good tolerance of inflorescence to frost damage.

Abstract: A sport of Panorama differing therefrom by its dark yellow ray floret color.

Abstract: A sport of Panorama differing therefrom by its orange-bronze ray floret color.

Abstract: An African violet which is a mutation of Colorado, disclosed in my pending application Ser. No. 764,216, filed Nov. 30, 1976. The mutation is characterized by its large white flowers having frilled edges, red-violet in certain areas, and by its vigorous growth, upright and strong flower stems and profuse flowering.